I think Microsoft will end-of-life Xamarin Studio and will convert it to Visual Studio brand with just support of OSX and Linux
MS is going all Oracle-y on us, withdrawing from the consumer market as fast as they can, and heading for the green pastures of the corporate market, where fat happy companies are there to be milked. They are sick and tired of fighting for consumer money one penny at a time.
(XBox is probably not long for this world either.)
But most people writing the apps which then run on Linux, develop them on Macs (and the point of WSL is to give them a reason to consider Windows for this).
It still has a few bugs and hangs up on me once or twice a day. I think they should have those ironed out soon though.
By the way, since it's based off MonoDevelop, you can just use it con Linux.