This is not a tiny security update, but rather, the Samsung Galaxy S7 (SM-G930T) and Galaxy S7 edge (SM-G935T) from T-Mobile would see its software baseband version number bumped up to UVU2APC8 on both devices after applying the software update.
It will begin to roll out to the eligible from today onward via Over The Air (OTA), but do bear in mind that this particular software update will not make any changes to the Android version of both handsets, which means that Android 6.0.1 Marshmallow would still be the order of the day. What will the update bring to the table this tie around? Improved voice services, optimized battery live, system enhancements, and a more stable video recording experience, not to mention better device performance and stability.
For Galaxy S7 owners, this software update is rather hefty at 215.56MB, although Galaxy S7 edge owners will find it to be a faster download at 146.91MB.