No, the calendar isn't lying to you, it is December. That said, Samsung has always released security updates for its older devices with some delay compared to its latest and greatest, and this time around the situation is no different. Following the Galaxy S7 and S7 edge, which both got it last month, and the S6 and S6 edge, which received it a few days ago, T-Mobile's Galaxy Note5 and Galaxy S6 edge+ are now finally being graced with the November security update too. The build is DPK6 for both devices, and it's currently in the process of rolling out over-the-air. As such, you'll see an...
Source: http://www.gsmarena.com/tmobiles_samsung_galaxy_note5_and_s6_edge_are_now_receiving_the_november_security_patches-news-22030.php