Reports are coming that Windows 8 may RTM in April 2012. Recently Microsoft CEO Steve Ballmer said that next generation of Windows systems will come out next year.
If you can remember, Microsoft's Dutch site also revealed by mistake in Oct, 2010 that it'll take about 2 years before Windows 8 is available on market.
And now Mary-Jo Foley @ZDNet is reporting that Windows 8 will RTM in April 2012.
Its also mentioned in the article that there will be Beta release (not a pre-beta or preview) around the time of BUILD conference in mid-September.

Microsoft will deliver RC (Release Candidate) in January 2012.
So if the above information is correct, there is not much time left to see Windows 8 RTM in action.
This article was posted by VG in following section: Windows 8.
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Prashant Ghai
I'm totally unimpressed by what i've seen so far of Windows 8. Ok, maybe for tablet its a step forward, but I'll always prefer an Android OS in that as well.
Was really excited for Windows 7, but Windows 8 is something I may pass off for good.
Devanche
I agree with Prashant, what really makes Windows 8 faster except another GUI? I hope it won't be Vista all over again.
Mohamed
Parshant Ghai +1 !
Leomate
I try win8 7955 and faster than win7 :p
SCBright
I agree, I'm not impressed too. As far as I can see, the new interface seems like a big Windows Phone \o/.
Only touch screens will benefit from this interface, touch screens are not so common on desktops and are too expensive (especially for me - I live in South America).
I'm very happy with my Windows 7 which, until now, didn't disappoint me. I think MS is making a mistake that (I hope not) can ruin an outstanding release.
Abhishek
As you tell us, some of the features of win 8 are excellent like start tile, aero auto colorization and others, but i don't like metro theme and its interface, and for me looks matters a lot.
But very excited to use win 8 with its ugly looks. Thanks
Leomate
Hope ms make option to set default shell
Ahmad
Nice..but i'll stick to 7 for a while...