One issue that I know of (happened on mine) was that Microsoft broke the function of launching the correct OneNote (if you have OneNote 2013 installed) that you have checked as a default. Mine would always launch the OneNote app rather than the 2013 version which I had marked as the default.
I have my surface updated to 10. Its awesome. Much better than 8.1. the only thing I miss on 8.1 is metro IE. There is a gestures app to bring back that functionality but I am not yet there to try it. I am going to see how I make out without using it.