I was about to mention this. There is a long interview with the head of the bass amp design team. In which he mentions that there are some all tube bass heads in the works. KT88 tubes are mentioned!
Also some pretty extensive looks at the M3 Carbine and the PH112 cabs.
My hopes are that this means Mesa will debut an "Orange/Matamp" styled bass head. But anything all tube for mesa bassists I am sure will be great.
