So I checked out pokebeach, and yes more rumors. However WPM seems to believe that there may be some truth to them as they were given to him by an old Zelda game maker who has released info about other games before that turned out to be true. So here they are... ( Oh and I copied this all from pokebeach, so the original poster's comments are in it as well).
There will be 157 new Pokemon, bringing the total amount to 650.
Seems as though we will be getting a lot of new pokemon, and a lack of old ones similar to Hoenn.
Like how Giratina compliments Dialga and Palkia, a large, green snake will accompany Reshiram and Zekrom.
Well if this is true, it will interesting to see how much different it will be from Tsutaaja's final evo.
Tauros will have an evolution: Minotauros.
I hope so! Please let there be one, normal/fighting? Would def. be on my team.
In previous games, either through moves or through abilities, players were able to alter the weather conditions of the battle field to boost certain types. For example, Groudon's Drought summons sunlight, which boosts Fire-type moves by 50%. In Black and White, players will be able to collect certain items that alter the weather conditions of the battle field. Approximately twenty of these items will affect the weather conditions so that they will boost certain types (kind of like Stadium cards in the TCG?), with some types getting added bonuses depending on the item. As a side note, in today's CoroCoro scans, there was a screenshot showing a new weather indicator (we overlooked it), which could give credence to this claim.
One example will be setting up a Poison Field, which causes all Poison-type attacks to gain 30% accuracy, Sludge Bomb to have a 100% poison rate, and the effects of Toxic Spikes' poison to have an immediate effect.
Interesting, but I rarely use items, so I wonder how useful they would actually be. But maybe I would find them useful when I play the games.
Black and white, good versus evil, and yin and yang are going to play a major part in the plot. However, unlike previous Pokemon games, the decisions and choices you make will "influence" the plot of the game. If you make "good" choices, you might get certain help or items, whereas "bad" choices could have negative effects. The point is that the plot will not be as cut-and-dry as previous games, changing depending on the player's actions.
I think this is what people really wanted to see. A much more RPG-like game. Deciding whether you become a true trainer, protecting pokemon, maybe becominga gym leader, or falling of the right path, choosing to work for the "evil" team. If anything like this were to be included in the game I would be super happy.
So what does everyone else think? Not saying any of this is true though. Just mindless speculation. lol