According to Microsoft the official release of Windows 8.1 will be October 17, 2013.
So far, I haven't been a big fan of Windows 8's new features. OK, I do really enjoy Windows 8 when used on the Surface Tablet. But on a PC...
What I do love is it Windows 8's overall speed when on a PC. From applications starting, to boot/reboot speed is a huge improvement. And coming out of sleep or hibernation modes is they way Windows should have made it work from the beginning.
What I am still not sold on is using a Tablet focused interface as a PC Desktop with a keyboard and mouse. Lets face it, the keyboard/mouse is not going anywhere soon - and it is still the fastest way to get work done.
Tablets are fun and mobile but no one out of high school really considers them serious work devices.
But with Windows 8.1 and most of the Start button's menu returning I'm gonna give it one more shot.
Get it right this time Microsoft. Or else you will need more than saying "adios" to Steve Ballmer to keep that stock price up.
See the offical post at http://blogs.windows.com/windows/b/bloggingwindows/archive/2013/08/14/mark-your-calendars-for-windows-8-1.aspx