While there has been a lot of speculation about Matt's future with Google after this post. Fellow TW editor has a post up about hiring Matt Cutts. In it their are some nice sized offers being made if Matt ever does decide to jump ship, or at least to bring up the next time he comes up for review. Would You Hire Matt Cutts?
There is no factual basis to confirm Matt is even considering leaving Google. Consider this a bit of entertaining speculation