It seems Samsung thinks that one slider ain't enough for T-Mobile USA's lineup. The aptly-named t429 (pictured left) will slot in just below the long-since-released t629, offering up a measly VGA cam and Bluetooth in a dark, reasonably attractive package with an expected launch date of August 20 (no @Home here, sorry). Boy Genius Report has the full details, plus a closer look at the flashy t729 -- a phone that curiously extends Samsung's licensing relationship with RIM for BlackBerry Connect and SureType -- with availability allegedly starting August 1. We'll wait for 3G, personally, but you gotta like Samsung's initiative here.