Gundam Musou 2, GvG announced
This week's Famitsu announced both Gundam Musou 2 (PS2/PS3/Xbox 360) and Gundam Vs. Gundam (PSP). More details as they become available.
Edit: Gundam Musou 2 will hit all three systems on December 4. Char's Counterattack will be added to the series roster as will mecha that didn't appear in the previous version, such as mobile armors. Other series will be represented (as shown by the Strike Freedom's appearance) but it's not clear how many.
The Gundam Exia is included in the roster of Gundam Vs. Gundam MS. Additionally, the Exia will be enabled as a playable unit in the arcade version on September 1.