Windows 7 RC

I have sevearal questions about the RC.

1. Where can i can get the site officially?
2. How much will the RC cost to get officially..
3. Can i do an upgrade installation from my current windows 7 beta? Or will i have to do a complete reinstallation.
4. What is so significant about the RC?

Thanks in advance to anyone who helps me.
Im sure the answers to follow will help anyone in my position.

1. The site is not officially available yet. We will be sure to post it when the RC is available to download.
2. The RC will be free for everyone.
3. You will have to do a complete installation.
4. It's significant because it's Windows 7 in what is essentially its finished state. It will have all the features and performance of the final Windows 7.

I am seeing a lot of people and groups taking credit for this REAL leak of Windows 7 RC. I saw it happen and I know who gets the credit. There are two persons to be mentioned and rep'ed. The x86 and x64 versions were leaked by Einsteinjr on PB. The first notification about the torrent from Einsteinjr came from asfaltas on sevenforums.com. I fired up the x86 torrent (about midnight 4/24 CDT USA) and there were only 20 peers. Einsteinjr subsequently released the x64 torrent about an hour later. Since then everybody and their brother are either directly or indirectly assuming credit in some way. BlackroseMD1's speculated that his friend Einsteinjr might be involved and he was.

Just want to clear that up.

This leak is the official RC from someone close to Redmond. It will not change later. It is branded build 7100 and is a milestone build. When MS makes it available for download, it will match this build exactly.

To make sure you have the real ISO's use HashCalc (free on the internet) and verify against these values:

7100.0.090421-1700_x86fre_client_en-us_Retail_Ultimate-GRC1CULFRER_EN_DVD.iso
Size: 2.35GB
MD5: 8867C13330F56A93944BCD46DCD73590
SHA-1: 7D1F486CA569EFFFFB719CFB48355BB7BF499712
CRC32: E8A1C394


7100.0.090421-1700_x64fre_client_en-us_Retail_Ultimate-GRC1CULXFRER_EN_DVD.iso
Size: 3.04GB
MD5: 98341af35655137966e382c4feaa282d
SHA-1: fc867fe1ab2e0a9796f9e4d155b44ea6998f4874
CRC32: 58fb2be0