If you're one of the lucky few with a T-Mobile-branded Galaxy Tab 2 10.1, there's an update headed your way. It's based on Android 4.1.2, just like the last one was, but it adds one notable new feature: LTE. Yes, the tablet's latent LTE radio has been enabled with this update.
The new version of the software is starting to hit devices today, but mashing the update button won't help. It's going to be arriving in waves until all tablets have gotten the notification around July 19th.