I know a few release dates,Country Date
UK 9 September 2009
Canada 11 September 2009 (Toronto International Film Festival)
Spain 8 October 2009 (Sitges - Catalonian International Film Festival)
Australia 12 November 2009
Italy 27 November 2009
Finland 25 December 2009
Russia 21 January 2010
Germany 18 March 2010
Source: IMDb.com
These are only a few of the releasedates,the others are not released yet.