Finally after waiting so many weeks for newer updates to come on Windows 7 to enhance our Beta Experience, Microsoft from February 24th will be offering some test updates to Windows 7 Beta (build 7000) computers.

These updates would just be a test run to check the Beta updates and other things related to Beta versions which can render the further updates. Microsoft promises, this process would be fast and would run very smoothly. There will be at most five updates. These updates test the Windows 7 servicing infrastructure. They will not deliver any new features or fixes as of now.
The updates will be offered interactively. This means that users will be notified of available updates, but they won’t install automatically. Users will need to go to the Windows Update control panel and manually start installation. They will also be clearly titled as a test update. If you don’t want to install the updates then you can right click on each update and select “Hide update” to prevent it from being shown in the list of available updates.
Fair enough Microsoft is getting all geared up for the RC Windows 7 coming in weeks to come. This would ensure Microsoft how smooth the process of upgradation would be as RC would be the most stable and fixed version possible.
via Technet