Re: Update to Win10
Officially? No, and frankly, I would not have purchased a 920 with the intent to put it on Windows 10 Mobile because it'll be more of a pain than say, getting a 640 and upgrading that. It's best on 8.x.
Anyways, there are ways but it takes reading and some technical fiddling. I don't know what works off-the-top-of-my-head (there's been a lot of different guides/methods over the months I think) though so someone who knows more should be by any day now.