T-Mobile Roadmap or product listing chart has been leaked by internal person. According to list T-Mobile going to announce LTE-enabled devices this spring, giving hint that T-Mobile’s 4G LTE network will be operational by that time.
List includes Samsung Galaxy Exhibit with the BlackBerry Z10 and the Galaxy S III with newly upgraded 4G LTE capabilities for T-Mobile’s unique network bands. There’s also Sonic 2.0 Mobile Hotspot with LTE capability. All of the devices mentioned above are slated to be released on March 27th.
Currently no other information like specs, pricing and availability has leaked. Earlier Galaxy S 4G was the first devices to have access to the carrier’s faster HSPA+ network.
Source: TMO News