This little devil of an amp was just released as a prototype at this summer's NAMM show. (For those of you who don't know, the "National Association of Music Merchants" (NAMM) is the E3 of musical instruments. Its a biannual guitar, amp, effects ect. trade show.)
Basically, I near shat myself when I read this thing's specs.
For starters, its 5 lbs people. How can you beat that? Easily lighter than most guitars. It can run ANY TUBE! Yes, any type of power or preamp tube, and any combination you like. It also comes standard with a cool new Phantom Power for pedals, which lets you run all your pedals with no wall warts. All the power comes through your amp.
Check out the Milbert site for more info. Prices around 2k, available late '09. This will be something I definitely have to try out.