The next version of Windows operating system after Windows 7 is Windows 8 the number sequencing continues, an early build has been leaked on the web. The leaked Windows 8 ISO image has the build version of 6.1.7850.0.100922-1508 of winmain_win8m1 branch, indicating that it’s compiled and signed off on September 22, 2010. The build is the final build that belongs to M1 milestone, and the Windows 8 development has since been moved to M2, M3 and post-milestone versions up to 6.2.7980.0.winmain.110407-1832, as it has been more than 6 months since the M1.
The leaked Windows 8 M1 has the SKU of 32-bit Enterprise x86. As it’s Enterprise edition, you will need a KMS server for activation. And the M1 expires on February 5, 2011 so you may need to hack the installed Windows 8 with tokens and cert from activated Windows 7 in order to run the OS.
The Final Version of Windows can now be purchased at http://www.microsoft.com