We've been following the list of exhibitors coming to this July's invite only E3 event and one interesting new entry just popped up on the (password protected) E3summit08.com web site. The name? Valve Software. Yep, the Half-Life, Team Fortress, Counter-Strike and Portal deveopers will have a separate meeting room at the LA Convention Center.Of course, Valve does have a game coming out this year, the zombie co-op shooter Left 4 Dead that has been in development for some time at their recently acquired Turtle Rock Studios team. However do they have something else they plan to show at E3 this year? Let the guessing games begin . . .


