http://www.kingdomhearts3.org/
"CoM2" is called Birth by Sleep, and it is supposedly for the PSP.
KH3 has had no announced release date the game to be released late '08 is most likely BBS
There is a new enemy in BBS or KH3, it's a sort of bluish, possiblyt glowing or lightning-sparking creature similar to the simpler heartless from early in KH1. They are in a 3-d screenshot being fought by Roxas or a Roxas look-alike probably named Ven.
Saix may be an extremely important character in KH3 and possibly BBS (I knew it!)
BBS is probaly a sequel (estimates are by 10 years, don;t know if that's before KH1 or KH3, I think KH1)
KH3 is supposedly a sequel to both KH2 and BBS
Presence of Sora, Riku, Kairi, etc., are unknown but expected, as KH3 is not supposed to be 1000 years in future or past.
That's all I could collect, but it's more than we knew over here. Shoulda kept a KH forum section after the remodeling.