I haven't heard or seen anything about Cato Neimoidia, I doubt it would be in the game, after all it's barley seen in the movies. However there is still a chance, a small one, that it will be in the game.
On the new cover art for BF2 we see Aalya Secura, the jedi who was killed on that jungle planet, and the background appears to be the planet Mygeeto, where Ki-Adi-Mundi was killed in episode 3. While this is not solid proof it does lead me to think that these planets might be in the game. It is also mentioned in an interview somewhere that they are adding planets glimpsed only briefly in the movies. Maybe some of the planets where Order 66 was executed will be in the game, or it might be just another case of misleading cover art. We will just have to wait for more information I guess.
Not being paranoid doesn't mean someone isn't trying to kill you... or does it?