Hahahaha I laughed when I first heard about the actual dvd release.
A high quality dvd rip of Borat leaked to the internet months ago. I downloaded it in December and have now seen it at least half a dozen times.
Here's a link to the torrent:
Just be warned that it is a .rar file and you will need to extract it using winzip before you can actually play it in media player (or use videora to convert it and put it on your ipod)
Also be warned that the quality get a little grainy for the last 2 minutes, but you can't really expect perfection from a leaked copy released 3 entire months before the dvd.