When it comes to Android Updates they can take about 6 months or longer before you get updated to the Next version of Android. Why you ask? It is because not only does Samsung, LG, HTC, etc. need to make it compatible with there devices its also the carrier who has to shape it the was they want it. I have an S7 Edge and im on sprint and Sprint has been known to be the last one to update their devices to the latest version of android. Verizon, AT&T, and T-Mobile are usually pretty quick if not the same after an update is released.
Android user for 6+ years