CARY, N.C. — iEntertainment launched an updated version of its WarBirds online air combat simulator on Monday with a variety of new features.

WarBirds 2006 includes a new role playing system, user interface, more than 35 other additional features as well as support for the latest Macintosh computers.

iEntertainment will introduce the updated game at the E3 Expo this week in Los Angeles.