Another one here waiting to see how things go, I was reading on the BT users forum that it is not as easy to download and get started as they would like to make you think, and quite a lot of folks have gone back to their original platforms, having once installed it. There are also issues trying to download it.
I use Windows 7 and I am quite happy using it - so not sure even with the threat of support running out, all be it long into the future, that I will change up anytime soon.