Palm announced the Treo 750 smartphone, previously available in the United States only on AT&T’s 3G network, is now available in an unlocked version via Palm’s retail and online stores. The unlocked GSM Treo 750 smartphone comes with the Windows Mobile 6 operating system, allowing an even broader customer base to enjoy the benefits of increased functionality and HSDPA (High-speed Download Packet Access) capability out of the box.