Good news again today regarding Android Nougat. T-Mobile has released the Nougat update to the HTC 10 for customers with that device on their network. The update comes 6 weeks after the release of the update for the unlocked version of the phone which is a fair amount of time given T-Mobile has a good reputation on getting updates out to their customers. If you have the HTC 10, you are looking for software update 2.37.531.5. It should be hitting devices over the next few days via an OTA update.
Because this update is going from Marshmallow to Nougat, the update is hefty. It comes in at just over 1GB so you will want to make sure you are on Wi-Fi to download it. Once it is downloaded, you will need about 30 minutes to complete the upgrade process.