FCC Reveals The Unannounced Sony Ericsson Flip
Some documents spotted recently on the FCC web site reveal some information about the Sony Ericsson TM717, a clamshell phone that seems right now, to be headed to T-Mobile. This phone is based on the carrier branding and presence of 1700MHz AWS support.
The TM717 is strikingly similar to the T707. According to the draft user manual, other features include a camera, Bluetooth, multiple messaging services, music player, FM radio and support for M2 storage cards. Neither T-Mobile nor Sony Ericsson have said anything yet about this phone.

SE TM717
Source: PhoneScoop