T729 (left) and T419
The Samsung SGH-T729 should replace the not-so-successful T719 chunky candybar. This one is a slider, with more fashionable look, using black and saturated red colors for the housing. It brings SureType hybrid keyboard and BlackBerry Connect to the slider form factor. The display has resolution of 176x220 pixels (262k colors), and the camera is 1.3-megapixel.
Samsung SGH-T419 is simple clamshell with integrated antenna. Its internal display has resolution of 128x160 pixels and 65k colors while the external is grayscale. The camera is VGA (0.3 megapixels) and a nice feature is the Bluetooth.
Still, none of the phone is officially announced by either Samsung or T-Mobile, but the logo on the housings shows that this is the carrier.