T-Mobile has started rolling out a new update to Samsung Galaxy Note5 and S6 edge+ units on its network. They are about 60MB in size and bring the Android security fixes for January. In addition, the Samsung Galaxy Note 4 and the Galaxy Note Edge on T-Mobile are also said to be getting the patch, although the carrier is yet to update the software pages for these handsets to reflect this. The update for these devices arrives as version N910TUBU2DQA1 and N915TUBU2DQA1, respectively. Source 1 2 | Via
Source: http://www.gsmarena.com/tmobiles_samsung_galaxy_note5_and_s6_edge_are_now_receiving_january_security_patch-news-23170.php