[Varcht]

Put together with this "Parsing Microsoft’s Decision to Cut Windows Fees"[1] It may well be that MS is feeling enough pressure from Android and to a lesser extent linux to give it a go.

1. http://bits.blogs.nytimes.com/2014/04/02/parsing-microsofts-...

[tmzt]

Or profiting enough from Android and ChromeOS royalties to see it's a profitable model.