Following closely on the heels of Verizon Wireless, T-Mobile has rolled out Windows Mobile 6.5 for its Touch Pro2 and Dash 3G handsets. The update rolled out earlier than the target date of January 20th and is accessible from T-Mobile’s website once you enter in your handset’s IMEI. While AT&T, Verizon and T-Mobile customers now enjoy the new experience offered by Windows Mobile 6.5, Sprint customers are left waiting in the wings. Their patience may be rewarded as Sprint customers may be getting something more than the plain jane Windows Mobile 6.5 upgrade. A statement from Sprint suggests that the Sprint flavor of Windows Mobile 6.5 may offer “significant enhancements to the Touch Pro2 user interface which will allow additional customization / personalization options and more integration with the applications users access most.” Is Sprint promoting this upgrade with over-hyped marketing speak in order to placate Touch Pro2 owners or is Sprint really alluding to the mythical Windows Mobile 6.6 which is rumored to be unveiled at MWC 2010 next month?