The response to the public Windows 7 beta was huge – enough that they lifted the initial limits. The original cut-off date was going to be today, January 24th.
A quick check of the Windows 7 Team Blog shows that yesterday they changed their minds. Even as the Windows 7 team continues to receive an enormous amount of feedback, they are going to allow people to continue to download the public Windows 7 Beta through February 10th.
On January 27th, the Windows 7 page will display a warning that there are just a few weeks left in the public beta as far as downloading it.
On February 10th, new downloads of the Windows 7 Beta will not be allowed. If you started the process prior to the 10th but didn’t complete it, you have until the 12th.
Product keys will continue to be made available after February 12th to those who have downloaded the beta, but did not receive a key for some reason. As noted, none of this applies to MSDN or TechNet subscribers – those folks will have continued access to the downloads, etc., as part of their subscriptions.
Read: Windows 7 Team Blog