SMAP has announced that they will be releasing a new album this year on August 17th, titled SMAP AID. 200Yen from each album sold will directly go to the Marching J fund to go towards the relief effort in Japan.
The album will be a collection of their songs chosen by fans by a vote and each copy of the album with come with one of two handkerchiefs, Shiawase (Happy) no YELLOW-AID or Genki (Energetic) no RED-AID.
Also for everyone who buys the album they can send in to be part of a lottery to go to special fan meeting with the group that is limited to 10,000 people.
They also have fan meetings scheduled in four different cities for members of their fan club with all the proceeds from those going to Marching J.
Tokyohive article. (English)
From the little information up on Johnny's net about the album it seems the voting will be done in connection to their program SMAP X SMAP.