The BBC keep shunting back the broadcast of the final series. The latest scheduled date now seems to be Autumn 2014.
26 April 2013
The UK premiere of 3.01: DEN OROLIGE MANNEN (THE TROUBLED MAN) was shown at Leicester Square Theatre. See 2013: KRISTER HENRIKSSON for details. There will also be a limited theatrical release of this episode.
All 6 Season 3 episodes will be shown by the BBC this Autumn  followed by DVD/BluRay releases early in 2014.
02 January 2013
3.01: DEN OROLIGE MANNEN (THE TROUBLED MAN) will be released in Swedish cinemas on January 11.
29 May 2012
Well it looks as though there will be a Krister Henriksson Season 3 after all, albeit a truncated (6 episode) one.
It will start with a theatrical release of The Troubled Man in 2013 followed by 5 episodes that will go straight to home entertainment and/or TV. Looks exciting!
See this article for details.