Today, FCC passed the new slider/qwerty keyboard phone from Samsung. This model is called Holic or just Samsung T459. It looks similar to the Rumor LG from Sprint. So far, the new Samsung T459 Holic will be a quad band GSM / EDGE with Stereo Bluetooth, a 1.3MP camera, MP3 player, and a full keyboard after you slide it.
As you can see on the FCC document, it show TMB that stands for T-Mobile.
more information soon.