No surprise here, but Palm just passed a GSM version of the Pre Plus through the FCC with AT&T WCDMA bands.  The device goes by the model number P101UNA, and offers support for GSM 850, 1900 and WCDMA bands II and V.

The Palm Pre Plus is expected to cost $150 with a two year contract.  AT&T has not  provided a release date for the device.