Windows 8 is now available for download on both Technet and MSDN.
4 builds are available on Technet:
Windows 8 Enterprise (x86) – DVD (English)
Windows 8 Enterprise (x64) – DVD (English)
Windows 8 Pro VL (x86) – DVD (English)
Windows 8 Pro VL (x64) – DVD (English)
So why is the actual release going to be in October? How come Microsoft don’t release it right now?
The Verge had an excellent explanation:
At this point, Microsoft has finished the Windows 8 development cycle. So what’s the holdup that we can’t get it until October 26th? After spending a couple of days with the OS, I figured it out — it’s abundantly clear how much work OEMs have to do in the intervening weeks between today and October 26th. Companies need to build drivers, developers need to test and ensure compatibility, and manufacturers need to figure out the best way for their hardware to support the new software. Plus, the Windows Store needs more and better apps if it’s going to be compelling from day one.
…On the one hand, it’s tempting to say “Windows 8 is final, go get it now!” But unless you’re a relentless beta tester willing to endure unusable trackpads, finicky keyboards, and buggy apps, you should wait for October 26th. Developers and manufacturers need that two-month head start, but by the end of October we’re betting Windows 8 will be more than ready.
Here’s some hands on video with Windows 8 RTM.