When the October DC Comics solicitations came out one item of note was that the listing for Green Lanterns #33 showed Tim Seeley as the writer.  My initial thought was that maybe he was stepping in for an issue or two to give Sam Humphries a break, but the other thought was that perhaps there was going to be creative team change.  According to this response from Seeley on Twitter it seems that he may be taking over long term after all.