Sega Gamers Day is just an event where Sega will show off some of their up coming games, usually ones that are coming out the same year. They may also show teasers for later games but they wont show ALL of their line up so I couldn't promise that either Aliens RPG or Alpha Protocol will be shown.

I imagine a lot of attention will be given to the Bioware Sonic RPG, as that's due for release before either of Obsidian's titles, but we may yet hear something.

Obsidian's "Info" page.

 

What game projects are you working on?

Obsidian is currently developing a game based on the Aliens film franchise for next-generation systems and the PC, as well as an unannounced RPG; both with SEGA

Haha! I'll let someone know, thanks!