Samsung Galaxy S7 and S7 edge on US Cellular now getting Nougat https://www.androidcentral.com/samsung-galaxy-s7-and-s7-edge-us-cellular-now-getting-nougat
You should definitely wipe the cache partition, no doubt about it.finally!! Got it on Thursday, and so far so good on my S7 (knock wood). Still might do a cache wipe ...