I just want to say a word of hope for the pessimists out there who are predicting that we'll only get a book, or the faction will eventually get canned: Lizardmen /Seraphon have always been very popular among GW's palyerbase, and at one time, Skaven and Seraphon models were some of GW's most famous in terms of being big and impressive. New Seraphon models WILL SELL, and that's why I think GW will release new models. Even if it's just endless spells /spawning pools, or a leader character to go with a repackaged 2-faction starter
They know there is a large contingent of fans ready to buy in.