T-Mobile added the Samsung t739 Katalyst handset to their Hotspot@Home product line. The Katalyst is Unlicensed Mobile Access (UMA) capable, meaning it can route calls over a Wi-Fi connection. The Katalyst fills a gap between the existing low end and high end handsets for their Hotspot@Home service. The Katalyst offers a 1.3 megapixel camera, Bluetooth, and a 220 x 176 display.
Read more at this Engadget post.