June 11, 2007
Addition of Grupo Editorial Adria Ltda (GEA) as member of the WPF, representing Colombia

February 24, 2007
Addition of Thailand Crossword Game, A-Math, and Kumkom Association / Max Ploys as member of the WPF, representing Thailand

February 13, 2007
Addition of Beijing (News Group) Puzzler Club as member of the WPF, representing The Peoples' Republic of China

January 10, 2007
Addition of a list of upcoming international puzzle events.

November 28, 2006
Addition of Implicit Consultants as member of the WPF, representing Lebanon.

November 10, 2006
Addition of Fun as member of the WPF, representing Portugal.

November 7, 2006
Addition of Lithuania puzzle club as member of the WPF, representing Lithuania.

October 25, 2006
Addition of Cooch Creative as member of the WPF, representing Australia.

July 14, 2006
Addition of Affinity Education Place as member of the WPF, representing Singapore.

April 25, 2006
Addition of Sia Kuma as member of the WPF, representing Latvia.

April 18, 2006
Addition of Asociatia "Logic Club" as member of the WPF, representing Romania.

February 27, 2006
Addition of Keesing Krydsordsforlaget A/S as member of the WPF, representing Denmark.

January 18, 2006
Announcement of the First World Sudoku Championship March 10-11 in Lucca, Italy