Microsoft's next operating system will come in just three different flavours, the company has announced.

For those with Intel-compatible machines, the OS will be available in two versions - Windows 8 and Windows 8 Pro.

And for those with devices, largely tablets, powered by ARM-designed chips there will be a Windows RT version.

Microsoft wants to simplify how it markets Windows 8, which is expected to launch in autumn 2012.

The complex flavours of past Windows - from basic to home, premium to ultimate - have become something of a joke among tech experts.

Say goodbye to the Windows start button. Microsoft has gotten rid of it from the latest build of Windows 8.

Hitting the Web over the weekend, screenshots of the new Windows 8 build display the "super bar," but without the start button orb on the left, according to The Verge. Build 8220 will be the final version released before the beta, now known as the Consumer Preview, debuts before the end of the month.

Until its untimely (or timely) death, the Windows 8 start button located in the Metro UI offered access to the search, share, devices, and settings panels. The Windows start button in the desktop simply returned you to the Metro UI.