How better to celebrate your billionth download than with a brand new app store? RIM just rolled out App World 3.0 beta to its Beta Zone users, bringing with it a redesigned home screen created to "let you quickly find what BlackBerry app, game or theme you're looking for." Seems a bit overdue if you ask us, but better late than never, as the idiom goes. There are also new home screen icons for Games and BlackBerry Themes -- the store's two most popul
