Yeah I've got one on order. I briefly had a B7K but sent it back because this got announced within my returns period. If you're in the UK I'd definitely recommend Bass Direct as good guys to deal with.
There is an XLR out on the ultra, the only thing missing is the parallel out.
For recording direct the B7K will be fine, the EQ is at the end anyway so technically you can EQ in the DAW for a similar result. The EQ points on the B7K are pretty well chosen to begin with. It has had a small price drop since the ultra was announced.
I wanted the ultra for live use. So far using the M80 which is cool but the annoying thing is the distortion has the colour button permanently engaged on the clean signal, meaning any clean signal blended in will have a big mid scoop, fine if you want a mostly distorted sound with a little clean low end but not so great for if you just want a little extra dirt blended in. The Darkglass blend doesn't mess with your clean signal. Tonally they're quite different too, the M80 is more of a standard distortion whereas the Darkglass is much crunchier.
As long as this still sounds like the B7K for recording with I'll be super happy.