2011 marks the 50th anniversary of the WWF. To celebrate many countries will be issuing WWF stamps, including Australia. Australia's contribution will be a first for the WWF - the stamps of four territories (Australia, Christmas Island, Cocos and AAT) issued in a se-tenant arrangement.
Collectors might remember a similar format was used for the 2009 Species at Risk issue. It will be interesting to see if Norfolk Island is part of this joint issue.
No word on issue date or designs.