Pokemon: Platinum

[HinoteDoragon14]

The game has been announced in Japan. Their release is in the fall. The US one is unknown...

Features
New Origin Giratina
New Shaymin
Crazier storyline
New Regigigas?
Edited trainer overworlds
Climate change (zabuza9)
Computer? (zabuza9)
Two shady characters in Eterna (zabuza9)
Castle (zabuza9)
Three Regis at Lv. 30
Giratina can shift forms during battle
Gate to Floaroma
Battle Frontier
Torn World (Weird 4-D(?) graphics!) (jirachi)

Feel free to post any more I missed!

[Gravitymaster9001]

There's a climate change, a computer thingy, a castle and 2 new shady characters in Eterna.

[HinoteDoragon14]

I'll put that up! Thanks!

[Gravitymaster9001]

No problem!

[HinoteDoragon14]

It's been a pleasure working with you. I found other stuff I forgot, too.

[Jirachi]

There is also a 3-D world called the Torn World.

[HinoteDoragon14]

Thanks. I'll put that up.