McCartney and Starr meet... Bob Dylan

So I recently read that Paul McCartney, Ringo Starr and Bob Dylan are getting together to collaborate and write music together. Apparently, they've performed together before, but never actually written anything together like this. It should be pretty exciting and I'm curious to see what comes out of it. Ringo's supposed to be playing the drums, while McCartney and Dylan are putting the songs together. Should make for an interesting summer...