The "Rock Candy" blog from the the Arkansas Times is reporting that Jeff Matika, musician from Little Rock, AK, is joining Green Day on the next tour. This is the only source we've heard from.

I don't have time to get all private investigator on this (I'm writing this from an airport heading back home), my first assumption reading this was that maybe it was someone Jason White knew and suggested to the band.

The article mentions that Billie Joe would like to spend more time playing frontman during shows. Before people get all nostalgic and we start seeing "aww I love Billie playing the guitar" comments, lets remember that they did already use a 3rd guitarist for a couple songs during the American Idiot tour. I'm sure Billie will continue playing for the songs he wants to.