Season 3 region 2
I have live in Ireland so I have the region 2 version of season 1 & 2. The release dates of season 1 & 2 went like this:
REGION 1 REGION 2
The Complete First Season June 5, 2007 August 20, 2007
The Complete Second Season June 3, 2008 September 22, 2008
The Complete Third Season March 3, 2015
So I would guess region 2 season 3 would be released sometime in mid June. I can't be bothered waiting that long, looks like i'll be getting the region 1 release.