Handspring and Sprint today announced the Treo 300, a new Palm OS organizer and PCS Phone designed exclusively for Sprint’s new high-speed Sprint Vision (3G) network. The Treo 300 features a full-color screen, 16MB of memory, a QWERTY keyboard, and Web surfing and email capabilities. The Handspring Treo 300 is available now for US$499, but like other Sprint Vision products is not yet Mac compatible.