Just got this in my mail today.
Special Beta Edition — Correction
Because you signed up to test the Windows 7 Beta, we recently sent you mail about the expiration dates for the Beta and Release Candidate. Unfortunately, we made a mistake.
We said the Beta would start shutting down every two hours on June 1, 2009. The correct date is July 1, 2009.
The rest of the dates in the mail were correct. Here’s a quick summary:
Starts shutting down every two hours:
July 1, 2009
August 1, 2009
March 1, 2010
June 1, 2010
We apologize for the error and any confusion it may have caused.
Thanks again for helping us test Windows 7.
You are receiving this important message about Windows 7 because you downloaded the Beta or RC from either TechNet, MSDN or the Windows web site.