Microsoft may finish its Windows 10 operating system sooner than anticipated. The Register picked up rumors that the OS could reach release-to-manufacturer (RTM) phase in June 2015, which would allow Microsoft to roll out Windows 10 in time for the back-to-school stock in August. There's also some speculation that the next-gen Surface device may be one of world's first systems to feature Windows 10.
The release to manufacturer (RTM) would allow vendors to customise the software and have it ready for back-to-school stock in August. This is a jump for Microsoft, which would traditionally go to RTM in late August for release in October.
Of course, all this could change, and we could be drumming our collective fingers in October after major borkage problems are discovered. Or we may not.
What we do know, according to Neowin, is that June is the aim for the first converged-ish version of Windows 10. It is far sooner than we thought, although well within the parameters of the "second half of 2015" which was originally given.