Torrent download link in description of the video. I can't confirm if this beta client is the official version and if it works in incoming beta. I am trying now. The file size s about 1.35G. Low speed now!!
Lol, guys, check this out :D
Here's the torrent http://www.mediafire.com/?hh67abl206idtmq
Download DotA2 beta, go to steamapps folder and run DotA2.
It's not functioning, but you still get the client, so you can try to play practice, but I don't know how, yet.
IMPORTANT INFORMATION: Do not use your steam login information running DotA 2 beta, you might get banned, and I don't want that.