saw a windows tablet yesterday and loved how it is very close to being an actual PC. Made by HP, it looked good but figured if the start button is back it will be actually not good for this type of system. This is what i would recommend if i was still in the IT business. Get a test rig going make sure everything you want to work can work on it then then do the update see what happens. It is the only sure fire way to keep your business safe and do tests.

i personally would still hang on to windows 8.1 till it is no longer supported by Microsoft. OS incompatibility is crippling for businesses and i wouldn't risk it. If you are running Windows 7 pro do the test because it is a lot older then windows 8.1 But if you are like me and everything is going on windows 8.1 leave it be or do the test rig.