Nokia is working on Lumia 2520 for T-Mobile. It's not some sort of upgrade designed specifically for the nation’s largest “UnCarrier”. Just an OG, Windows RT-running 10.1-inch slab with T-Mo LTE support.
Sounds like the total opposite of exciting, particularly as 4G Lumia 2520 versions have been available for months on AT&T and Verizon. Packed with 32 GB built-in storage, Snapdragon 800 chips and 2 GB RAM, the slates cost $399 with two-year pacts nowadays, which Magenta probably needs to match to make a few waves.