For anyone wondering if this is the December 20th update:
It IS. T-Mobile released it to a limited number via OTA and on corporate SD cards back in October. That's when I uploaded it. T-Mobile started the second part of the rollout on December 20th.
THIS IS THE NEWEST UPDATE. THIS UPDATE IS AN OFFICIAL T-MOBILE RELEASE.
If you had good results, go ahead and click the "Thanks" button if you truely appreciate it!