Pokemon 2012 Calendar Vol.3 (PokeCenJP)

PokeCenJP will release the following 2012 calendar on 18 November 2011.
As for other 2012 various calendars, please see these articles.

[ Monthly Walltop Calendar ]

• Size : 42 cm x 59 cm (A2)
• Pages : Cover + 17 pages 
• Period : 1 March 2012 - 30 June 2013 (16 months)
• Note : Printing Japanese holidays, mentions how to register every Pokemon (#001 Bulbasaur to #646 Kyurem) to pokedex 

[ Reference ]
PokeCenJP : Pokemon 2012 Calendar release news