The carrier's support for the OS, which will be available starting August, remains tentative for now. Other carriers, such as AT&T, Verizon Wireless, and Sprint, have also yet to report if they will release devices running BlackBerry 10.
BlackBerry World 2012 just finished up this week in Orlando, Fla. There, RIM execs showed off the OS' new features, including a touch-screen keypad, Flow view, and gesture controls.
Editors' note (updated May 2, 2012, at 3 p.m.): According to a T-Mobile representative, the carrier stated that it has "not made any announcements with regards to future T-Mobile BlackBerry devices."