Windows 7 Milestone 1 Release 2 ???

After posting a video on the latest OS windows 7, no longer people called it an hoax. Now it is one of the hottest place to see the latest deveopment of the windows 7: 刀枪Blue

And he also claimed this is 2nd release of Windows 7 Milestone 1. (this image is an external link.)

If you are an fan on the windows OS latest developement, sure you must save this site in your favourite folder!

Just curious if he's a beta tester, he should not allow to expose any of the content, right?