WARNING:
Some or all of the events in this dream may not happen. Until there is any proof of these Pokémon's existence, consider all of this a rumor and fake.
Last night (July 19th), I had a very realistic dream relating to Black and White.
My cousin won a contest in Nintendo Power for them and 3 friends to fly to Japan to experience the launch of Black and White. This special prerelease only allowed 50 people other than the Nintendo employees and translators- We were 4 of the lucky ones.
After the flight, we were escorted by limo to the Nintendo of Japan Headquarters in Kyoto. Once inside, we were shown into a large area with Pokémon absolutely everywhere. All entrants were given special cards with the three Isshu starters on it- Pokabu, Tsutaaja and Mijumaru if you weren't aware.
Now, what you wanted to know- the Pokémon I saw!
First off, there was a Pokémon named マシン (this means Machine in Japan) which evolves from Gear at level 35. It looks similar to the following image:
Next up was 腹話術師, the evolution of Mr. Mime. (Sorry Sudowoodo, you didn't get one) Pretty much a taller Mr. Mime that lost weight with a Bonsly or Mime Jr. dummy. (Bonsly on males, Mime Jr. on females) It evolves from Mr. Mime when it learns Trick Room during the day. Mr. Mime learns Trick Room at level 34 in these games.
There were two Eeveelutions- Roceon and Spireon, Rock and Ghost-types respectively. Spireon had a signature move with it called Spook. Spook is a two-turn move with a priority of +4. On turn 1, it disappears under the ground similar to Giratina's Shadow Sneak. The second turn, it appears in front of the opponent's face, scaring them and lowering all their stats harshly. Spook has 5 PP, 100% flinch hax and 55% accuracy.
Tauros evolves into the long-rumored Minotauros, and Miltank evolves into Calcibarge.
To the surprise of nobody, the third title in Black and White is called Gray. Gray will feature both Reshiram and Zekrom, and an as-of-now unnamed gray beast larger than Reshiram and Zekrom, but with a similar body build. It has, instead of a torch or an electric generator on its tail, a large orb of water that is said to be its power source. The sprite for it will show its orb getting increasingly smaller based on its HP.
And that's all I saw in my dream of Black and White. Join me again when I come to the realization that the bird is the word. This has been Billy, and remember: What you see is still unconfirmed, but you should still believe it might happen. See you later.