When you Goggle "Redsn0w 0.9.7b7 " you will find plenty of links to sites that either say it will be released at some future point or it leads to some previous version or to sites like ModMyi with those folks saying it is a scam or hoax or worse. I found a link that says it is 0.9.7b7 and it leads to redsn0w_win_0.9.6rc8 . I have found links of Windows sites that lead to DLs of Mac versions.
As far as I am concerned, people should stop worrying about trying to find it and simply wait. There are two places one should be concerned with and that is IPF or the Dev Team Blog. Everything else is BS, a scam, or a scam dipped in BS.