Trial upgrades Windows 7

Microsoft has announced that they would soon begin testing a mechanism to upgrade the operating system Windows 7.

Users of test versions of new Microsoft operating system via Windows Update should be from 24 February to receive notifications of new updates.
Regardless of whether users are set to automatically install upgrades, these upgrades will be installed only after manual user intervention. Specifically, Microsoft stressed that it's not of any real or patch updates of Windows 7, but will only replace the existing system files with identical versions of these files.

Through this trial patch Microsoft wants to examine the work function for the automatic upgrade of operating system.