If you've got a Samsung Galaxy Note 10.1 2014 (or SGN1012014, as I like to call it) on T-Mobile, you may want to head into Settings > About tablet > Software updates and see if there's something waiting for you. Team Magenta started pushing the 4.4.4 update out today, which also brings Download Booster along with it. Fun times.
New Features
- Update to Android 4.4 (KitKat)
- Download Booster
Improvements
- IPv6 updates
That's essentially the bulk of it right there. Not a massive change, but enough to want to pull it sooner rather than later. Enjoy.