I see it was not yet announced here, so here you go - from AIDA's website:
The 2009 AIDA Depth Freediving World Championship in Constant Weight with and without fins will be held in the Bahamas - at Dean's Blue Hole.
Six time world record holder William Trubrige has taken the step to host the 6th Individual AIDA World Championship in his home-waters, Dean's Blue Hole - Long Island - Bahamas. The disciplines are Constant Weight and Constant Weight without fins.
Dates: 25th of November to December the 5th, 2009.