I'm not planning to upgrade my home machines (using Win7). I'm a Windows Insider and am using Win10 on test machines from early builds. Some builds were disastrous, some better. Personally i don't think it is ready for such an early release, but MS will rush it and will fix it eventually. But i don't see anything of value to me to even consider upgrading. Win7 perfectly fits my needs and it will be supported for a very long time. Win10 on the other hand has some things that i don't like, and i don't want to harm my usability just because its new and "free". At work we can't upgrade for free and updating to a fairly different UI is an investment on its own (users/support learning), so we will be using Win7 for many years. As i use Paint.NET at home and at work (not an artist, just a limited editing here and there), I don't like the idea to cut Win7 users off. Will stop donating to this project then and eventually will look for some other tool (though older versions should probably work for me for some time).