Yes, one more title has been added to the upcoming DS game and it's "Gundam SEED C.E.73 STARGAZER" which was a side story to the "Gundam SEED Destiny" series. That means you'll see characters such as Sven with his Strike Noir Gundam appearing in it.

As a reminder, the game is due August 9th with a Limited Edition DS Lite package available as well as a pre-order bonus DS game case available too.

Source:
• Famitsu

Related Links:
• Official Site
• SD Gundam G-Generation Cross Drive, Delayed But Two More Gundam Titles Added