So, the emphatic takeaway here seems to be that we're not going to suddenly ditch 25% of people. So, the recent v0.2.y series released has amped up support for Windows 7, including automatic detection of KB2921916.
We'll revisit the discussion in some amount of time if the market share seems to be decreasing. I did notice, in the course of using Windows 7 to develop for it, that every once in a while, the whole screen will fill up with a notice saying WARNING, WINDOWS 7 IS EOL'D or something to that extent. We'll see what effect that has. Jason
