This is a bit late because my copy of the season arrived today! Mad Men Season 5 is now out to buy on DVD / blu-ray. Good for those who have all the other seasons, and / or those who don't have AMC. "What about us?" Netflix users ask, well I'd say season 5 should be on around Christmas....?
The show is still going strong (some say this was the best season yet) and no surprise - it's one of TV's best dramas, and shows overall.