DVD of the mini series is out already. Since the show is on it's first run in the US, we won't see the US release until sometime late 2005. UK'ers will get the first season DVD's sometime mid year.
It's been speculated that the US release will likely to have more in the way of more extras just like the mini series (UK release was a bare bones release, US had full length commentary, 40 plus minute lowdown featurette on the mini, as well as a lot of interesting deleted scenes).
Part of Sci-Fi's way to keep people from importing the DVD's possibly. The 3rd episode was cut in the UK (the scene in the briefing room between Starbuck and Flat Top's masturbation innuendo was cut) but aired in it's entirety in the US.
Also, lots of scenes were cut from the broadcast episodes for time constraints. We might get those on the DVD release hopefully. One important one dealt with the picture the pilots tap on their way out of the ready room. That picture was a Colonial solider looking at all the destruction on Caprica, a sort of nod to the iconic 9/11 fire fighters raising the flag at Ground Zero as a "we shall never forget" type icon and was supposed to have been given to Roslin in '33' and spread throughout the fleet. Would have been cool, and prevented people asking,
"what is that picture?"
So that's what was up with that picture they were tapping. Now I"ll have to get the mini series dvd's. I just thought the classic series was the only one out.