The comments below come from Junichi Masuda’s blog. Masuda has has been involved with the Pokemon games since the beginning and has had a directing role since Gold/Silver.
“PR was completely new titles we are developing at last!
‘Pokemon Black’
‘Pokemon White’
We are a little bit to enhance quality,
Are spending more time on this work now.
As you can happily enjoy even to those who until now.
To satisfy those who have never played well.
And this time, people think that Pokemon graduate.
Many people want to enjoy.
Are produced in such a thought.
The film, is reborn as revolutionary Pokemon.
Please stay tuned.
Chao.”
As you can tell, this is a Google translation. However, you can probably understand most of what was said. Masuda seems to be indicating that there are some big changes ahead for Black and White. Keep your eyes peeled for more information about the new games over the next few days.