Here is all the information I was able to get:

The Invasion Cycle consists of the following 3 sets:

Invasion (October 2000)
Planeshift (Spring 2001)
Apocalypse (Summer 2001)

Invasion pre-release tournaments will run on September 23-24, 2000 and every participant will receive 1 starter and 3 boosters of Invasion.

The symbol of Invasion is the helmet of Volrath and can be found here:
file:///php_bin/viewimg.php?name=/tracing/in/images/in_symbol.gif

The names of the Invasion Preconstructed decks will be:

Blowout
Dismissal
Spectrum
Heavy Duty

WotC's Invasion Promotional Site Up can be found here: www.magicinvasion.com
The best will be if you have a look at it yourself (after reading the whole article )

But now onto the most interesting thing, the new cards and features of Invasion:

REPRINTS:

Fertile Ground - 1G
Enchant Land
Whenever enchanted land is tapped for mana Fertile
Ground adds one additional mana of your choice to
your mana pool.

Metathran Zombie 1U
Creature - Zombie
1/1
B: Regenerate Metathran Zombie.
(The Drowned reprint)

? Trapper 1W - C
Creature - Soldier
1/2
W, T: Tap target creature.
(Master Decoy reprint)

Ravenous Rats 1B
Creature - Rats
1/1
When Ravenous Rats comes into play target opponent
must choose and discard a card from his or her hand.

Crown of Flames - R
Enchant Creature
R: Enchanted creature gets +1/+0 until end of turn.
R: Return Crown of Flames to its owner's hand.

Soul Burn X2B
Sorcery
Spend only black or red mana for X.
Soul Burn deals X damage to target creature or player.
You gain 1 life for each B you spent for X, but not
more than the life total of the player before Soul Burn
dealt damage or the toughness of the creature.

? Griffin 3W
Creature - Griffin
2/2
Flying, First strike
(Ekundu Griffin Reprint)

? ? R
Creature - Cat
1/1
(This card is a killer, isn't it?)

Quirion Elves - 1G
Creature - Elf
1/1
As Quirion Elves comes into play choose a color.
T: Add G to your mana pool.
T: Add one mana of the chosen color to your mana
pool.

Phyrexian Battleflies B
Creature - Insect
0/1
Flying
B: Phyrexian Battleflies gets +1/+0 until end of turn,
you may not use this ability more than twice each
turn.
(Vampire Bats reprint)

Tranquillity 2G
Sorcery
Destroy all enchantments.

Maniacal Rage 1R
Enchant Creature
Enchanted creature gets +2/+2 and cannot block.

Lobotomy 2UB
Sorcery
Look at target player's hand and choose any of those cards other than a basic land. Search that player's graveyard, hand, and library for all copies
of the chosen card and remove them from the game. That player shuffles his or her library afterwards

And perhaps some more…(I'm sure that counterspell, disenchant, stone rain and such will also appear in Invasion)

GOLD CARDS/LEGENDS:

Yeah, they're really in the set, here's an official WotC statement:

'The Invasion card set features the return of gold cards and Legends,
plus new game mechanics aimed at encouraging true multicolor play'

I think the return of the gold cards has lots to do with the big amount of mono decks in MBC and T2 and I hope that they will really make the environment more various…

I also found out something more about multicolor legends:
There is a rumor, that there will be common multicolor legends, with casting cost and abilities like this:

Vodalian Zombie UB
Creature - Merfolk Zombie
2/2
Protection from green.

This is definitely a common and if it is indeed a legend, this will be a highly unusual and
interesting set. The other curious thing is the casting costs and the
protections, as they represent opposites on the Magic color wheel.

Other gold cards are these uncommons:

?
UUW
Instant
Counter target spell. You gain 3 life.

?
UUB
Instant
Counter target spell. That spell's caster loses 3 life.

?
1BR
Sorcery
Discard 1 card at random from your hand. If the discarded
card is a creature, put it into play.

Btw, there are also some multicolor lands like these ones:

Irrigated Field
Land
Irrigated Field comes into play tapped.
T: Add W to your mana pool
Sacrifice Irrigated Field, T: Add UG to your man
pool.

Sulfur Vent
Land
Sulfur Vent comes into play tapped.
T: Add B to your mana pool
T, Sacrifice Sulfur Vent: Add UR to your mana
pool.

The question is, if it's really useful, that the land produces mana of other colors if it is sacrificed. It is interesting for multicolor decks, but I would prefer the lands from 6th who produce 2 mana of their original color if one sacrifices them…

KICKER:

Kicker? What is it?
It is a new ability some of the creatures of Invasion have got. Here's a typical creature with Kicker:

Faerie Squadron U
Creature - Faerie
1/1
Kicker: 3U (You may pay an additional 3U when you
play this spell.)
If you paid the kicker cost, Faerie Squadron comes into
play with two +1/+1counters on it and has flying.

If you play a creature with Kicker you can choose whether or not you want to pay the additional cost(named 'Kicker'). If you pay it, the creature will be stronger. Kicker cards have the advantage that they can be normal creatures in the early game OR strong creatures in middle or late game.
e.g. Faerie Squadron can be either a 1/1 for only one blue mana or a strong 3/3 Flyer for 5 Mana. That's good, isn't it?

Some more creatures with Kicker are:

Duskwalker - B
Creature -Horror?
1/1
Kicker: 3B(You may pay an additional 3B when you
play this spell)
If you paid the kicker cost, Duskwalker comes into play
with two +1/+1 counters on it and has "Duskwalker
can't be blocked except by black and artifact
creatures."

Pouncing Kavu 1R
Creature - Kavu
1/1
Kicker: 2R (You may pay an additional 2R when you
play this spell.)
First strike
If you paid the kicker cost, Pouncing Kavu comes into
play with two +1/+1 counters on it and has Haste. (It
may attack and T the turn it comes under your
control.)

Prison Barricade 1W
Creature - Wall
1/3
(Walls can't attack)
Kicker: 1W (You may pay an additional 1W when you
play this spell.)
If you paid the kicker cost Prison Barricade comes into
play with a +1/+1 counter on it and can attack as
though it wasn't a wall.

Urborg Skeleton B
Creature - Skeleton 0/1
Kicker: 2 (You may pay an additional 2 when you play
this spell.)
B: Regenerate Urborg Skeleton
If you paid the kicker cost, Urborg Skeleton comes into
play with a +1/+1 counter on it.

Llanowar Elite G
Creature - Elf
1/1
Kicker: 3 (You may pay an additional 3 as you play
this spell.)
Trample
If you paid the kicker cost, Llanowar Elite comes into
play with two +1/+1 counters on it.

Benalish Lancer 2W
Creature - Knight
2/2
Kicker: 2W (You may pay an additional 2W as you
play this spell.)
If you paid the kicker cost, Benalish Lancer comes into
play with two +1/+1 counters on it and has first strike.

There are also some non-creature spells with Kicker:

Orim's Touch W
Instant
Kicker: 3 (You may pay an additional 3 when you play
this spell.)
Prevent the next 1 damage that would be dealt to target
creature or player. If you paid the kicker cost prevent
the next 4 damage that would be dealt to target creature
or player instead.

? 1G
Instant
Kicker: 3 (You may pay an additional 3 when you play
this spell.)
Target creature gets +2/+2 until end of turn. If you paid
the kicker cost then target creature gets +5/+5 until end
of turn instead.

OTHER CARDS:

Here are all of the other cards I was able to get some information about:
(This cards are commons)

? 5GG
Creature - ?
5/4
When ? comes into play, draw a card.

? Zombie BR
Creature - Barbaian? Zombie
2/2
Protection from white.

Stormscape Apprentice U
Creature - Wizard
1/1
W, T: Tap target creature.
B, T: ?

? 1U
Instant
Counter target creature spell.
Draw a card.

Quirion ? 1G
Creature - Elf
1/1
When Quirion ? comes into play, if you played it
from your hand, add one mana of any color to your
mana pool.

Aim 2R
Sorcery
Aim deals 2 damage to target creature or player.
Draw a card.
(Cards like this one are really interesting)

? W
Sorcery
You gain 3 life.
Draw a card.

? ? RG
Creature - Barbarian? Elf
2/2
Protection from blue.

? Acolyte 1W
Creature - Cleric
1/1
Protection from black
W: Target creature gains protection from black until
end of turn.

? Kavu 1R
Creature - Kavu
1/1
T: Target creature gains first strike until end of
turn.

? 2U
Instant
Return target creature to its owner's hand.
Draw a card.

Cursed ? 1B
Enchant Land
When ? ? comes into play draw a card.
Enchanted land is a swamp.

? Kavu 4G
Creature - Kavu
4/4
R: ? Kavu gains haste until end of turn.. (It may
attack and T the turn it comes under your
control.)

? Apprentice B
Creature - Wizard
1/1
U, T: Put target creature you control to the top of
its owner's library.
R, T: Target creature gains first strike until end of
turn.
(Invasion really seems to be a set that wants to make multicolor decks stronger…)

? Apprentice W
Creature - Wizard
1/1
G, T: ? ? ?
U, T: Put target creature you control on top of its
owner's library.

Bog Initiates - 1B
Creature - Wizard
1/1
1: Add B to your mana pool.

Tribal Flames 1R
Sorcery
Tribal Flames deals X damage to target creature or
player where X is the number of basic land types
among lands you control.

Vitalizing Scents 1G
Sorcery
You gain 2 life for each basic land type among lands
you control.

Worldly Counsel 1U
Instant
Look at the top X cards of your library, where X is the
number of basic land type among lands you control .
Put one of those cards into your hand and the rest on
the bottom of your library.
(and once again multicolor decks are encouraged…)

Crimson Acolyte 1W
Creature - Cleric
1/1
Protection from red.
W: Target creature gains protection from red until end
of turn.

Viashino Grappler 2R
Creature - Viashino
3/1
G: Viashino Grappler gains trample until end of turn.

Caspashen Unicorn 1W
Creature - Unicorn
1/2
1W, T, sacrifice Capashen Unicorn: Destroy target
artifact or enchantment.

Wings of Hope WU
Enchant Creature
Enchanted Creature gets +1/+3 and has flying.

Quirion Trailblazer 2G
Creature - Elf
1/2
When Quirion Trailblazer comes into play, you may
search your library for a basic land card and put it into
play tapped. If you do, shuffle your library afterwards.

? ? 3BR
Sorcery
Destroy target nonblack creature and target land. They
can't be regenerated.

Shoreline Raider 2U
Creature - Merfolk
2/2
Protection from Kavu
(This card is mysterious: Kavu is a new creature type and every color seems to have kavus. But are there that many that a special protection is useful!?)

A FINAL WORD:

Time will show, if Invasion can hold the promises that were made by Wizards of the coast.
(Mark Rosewater and Jeff Donais both stated (while attending the Worlds) that they had never before had so much fun in limited as with Invasion Cycle limited. Furthermore, MaRo was so excited about the set that he promised it would be one of these rare sets which will still be remembered after 5 years)

The new feature Kicker is very interesting as the reprints are. The gold cards can make the environment more interesting and various (I wasn't sad about having no gold cards in the last sets, though) and perhaps the 'Kavus' will soon be everyone's favorite creature type…
Who knows? But soon we will see more, when the first at least half complete spoilers appear…

That's it for now about Invasion. But I'll try to get more information and if I get to hear something interesting, you'll find a new article on MOTL.

If you have any more information or questions about Invasion, post them.
If you have any suggestions referring to my way of writing, email me.

Thanks for your time,

Christoph

BTW, many of the information above are speculations I found in the WWW. I only used the ones that seem to be true, but it is possible that some of the 'facts' aren't real facts.

__________________
Posted by Christoph, the trader in Germany with the most refs

I'm sure that Quirion Elves & Tribal Flames will see a lot of play!

Kicker ability looks great, now you can play small or big creature, depends on situation...

yes, you're right. That's exactly what I thought while reading about them. Let' see if they'll be in some decks...

__________________
Posted by Christoph, the trader in Germany with the most refs

__________________
Posted by Christoph, the trader in Germany with the most refs

Friday, August 25, 2000

Reported by MAGICJAG
Source: Can't tell ya

More juicy info :-) We are not responsible for them :-)

The followings are not 100% confirmed, but their credibility meter is over 90%:

Simoon from Visions is reprinted, as well as Soul Burn (we already knew this).

There are 5 uncommon Dual lands for the friendly colors that come into play tapped and don't have any other drawback.

There are 5 rare artifacts that cost 3 mana. Each of them mimics the dual lands for the friendly colors. This is a 2000% better version of Sol Grail.

Name
2BB
Creature 2/2
Protection from White
When ~name~ comes into play, put one +1/+1 counter on it for each plains target opponent controls
The followings infomation has the credibility meter of less than 90%, some of them are much less than that:
Name
1U
Counter target artifact, creature, enchantment or land ability requiring an activation cost. Abilities of that permanent cannot be played again this turn. If the target is a land, destroy it.

Name
2WUBRG
Sorcery
If you control one creature of each color and one basic land of each type, you gain the game.

Name
Creature - Kavu
First strike, trample During your upkeep, sacrifice a creature or destroy ~name~.
Sacrifice a creature: Regenerate

__________________
Posted by Christoph, the trader in Germany with the most refs