Bon Jovi back in the studio

As posted on Bon Jovi's Facebook and Twitter accounts:

day off... recording a couple new songs for you - jbj about 9 hours ago via Facebook

New songs! Presumably that's for the greatest hits? I wonder if the proposed second year or so of the Circle tour is actually going to be a Greatest Hits tour (kind of like how the Crossroads tour slid into These Days)...