@veroguy
I have not heard anything about SMc having plans to put the DAC-2 into production. You could contact Patrick at SMc directly for more information.
The SMc DAC-2 does sound very good to me, but so does the B4B (one of which I previously owned). I have been conversing with Benjamin about why I like the sound of my EVO Pro so much and when I opened mine up, I found that it contains special AD1862 Z DAC chips, which are apparently much more precious than the standard version. There is apparently one more recent upgrade that I could do to the EVO Pro, or I could move my Z chips to an X SE and have the upgrade performed on that DAC.
In any event, unless you are willing to chase down rabbit holes, you may want to remember why you liked the sound of the B4B in the first place, and stick with that. The Mola Mola is a different animal and sounds like perfection, but that version of perfection may not be the sound I like best.