A little birdie dropped us some interesting details about a couple of upcoming T-Mobile handsets. Both the t429 and t729 are Samsung sliders. The Samsung t729, which will also be marketed as the Samsung Blast, is a BlackBerry Connect equipped device, sporting a SureType keyboard, 1.3 megapixel camera, Bluetooth, and more. As far as we know this is the first BlackBerry Connect-capable device to come in a slider form factor. The Samsung t429 leans more towards the pedestrian side of things, sporting a VGA shooter, Bluetooth, and the usual host of built in apps and features. The Sammy t729 will be available beginning August 1st, with the Samsung t429 dropping on the 20th of August. No pricing info is available just yet, but we’ll keep our ears to the street and hit you with any further details we happen to uncover. Full spec sheet after the jump!