August 15 was marked on the calendar. No, it's not my birthday, nor another publisher of Less Than. 15 August, the date of making Windows 8 available to humble deadly developers of the MSDN and TechNet portal (I'll try a shorter name next time).
Whoever tested the previous version " Windows 8 Release Preview", Which was released in May, will not see major changes.
For now, keep the official link to download Windows 8 RTM (This installation is valid for 90 days, after that, they can start to prepare the money and pay for a license, which are not even that expensive)
Repeating, for the most distracted: Download Windows 8 RTM (Valid for 90 days)