So why don't we make a list instead of just speculating?
We know we will have:
Kyogre (from the mini-binders)
Deoxys (from the mini-binders)
Lucario (from the mini-binders)
Tangrowth (from the mini-binders)
Zangooze (Card actually already revealed)
Ho-oh (Card actually already revealed)
Lucario (Card actually already revealed)
Lugia (Card actually already revealed)
Houndoom (Card actually already revealed)
Cards that are out in Japan but not here:
Pachirisu (Lost Link)
Mr. Mime (Lost Link)
Mime Jr (Lost Link)
Seviper (Lost Link)
Snorlax (Lost Link)
Research Documents - Goods (Lost Link)
Lost Remover - Goods (Lost Link)
Lost World – Stadium (Lost Link)
Pachirisu – Lightning – HP60
Basic Pokemon
Poke-Power: Self Charge
You can use this power once during your turn when you play this card from your hand onto your Bench. Attach up to 2 Lightning Energy cards from your hand to this Pokemon.
[L][C] Buzz Bolt: 50 damage. Place all Energy attached to this Pokemon in the Lost Zone.
Tangrowth – Grass – HP110
Stage 1 – Evolves from Tangela
[C] Grind: Does 20 damage times the number of Energy attached to this Pokemon.
[G][C][C] Smack: 30 damage. Flip a coin, if heads the Defending Pokemon is now Paralyzed. If tails, place one Energy card attached to the Defending Pokemon in the Lost Zone.
Mime Jr. – Psychic – HP30
Basic Pokemon
Poke-Body: Sweet Sleeping Face
If this Pokemon is Asleep, it takes no damage from attacks.
[.] Sleepy Lost: Send 1 card from the top of your opponent’s deck to the Lost Zone. This Pokemon is now Asleep.
Mr. Mime – Psychic – HP70
Basic Pokemon
Poke-Power: Expose
You can use this power once during your turn. Each player shows his or her hand to the opponent. This power can’t be used if this Pokemon is affected by a Special Condition.
[P][C] Juggling: Flip 4 coins, this attack does 10 damage times the number of heads.
Seviper – Psychic – HP90
Basic Pokemon
[C] Store Poison: This Pokemon is now Poisoned.
[P][C] Poison Effect: 20 damage. If this Pokemon is Poisoned, this attack does an additional 60 damage. Afterwards, this Pokemon’s Poison condition is removed.
Snorlax – Colorless – HP100
Basic Pokemon
[C][C][C] Chatter Sleep: This Pokemon recovers all of its HP. This Pokemon can’t use Chatter Sleep during your next turn.
[C][C][C][C] Brisk Walk: 80 damage. Place 1 Energy attached to this Pokemon in the Lost Zone.
Research Documents – Goods (Trainer)
Look at the top 4 cards from your deck, choose any number of those cards and return them to the bottom of your deck in any order. Then, return the remaining cards to the top of your deck in any order.
Lost Remover – Goods (Trainer)
Place 1 Special Energy attached to an opponent’s Pokemon in the Lost Zone.
Lost World – Stadium
Each player may, during his or her turn, end the game and declare himself or herself the winner if the opponent has 6 or more Pokemon cards in his or her Lost Zone.
Surely not all will be printed in the set but at least it helps narrow down what will possibly be there. Credit to Pokebeach for the translations. Anything else I missed?