Line 6 expanded the M-sereis family. and added the m5 stompbox modeler
read the pressrelease here
http://www.vettaville.nl/page.php?id=152#1161
Pilots guide is online
http://l6c.scdn.line6.net/data/l/0a06434d36024d9b9c3b523c8/application/pdf/M5%20Pilot's%20Handbook%20(Rev%20A)%20-%20English.pdf