Here's where I am on all this.
The MB was a significant investment for me. I feel that Arturia has let us all down on communication as well as the tardiness of promised fixes. We've been taken for granted - mugs, if you like. That's disappointing to say the least.
I'm now in a position of wanting to spend some money (retirement coming up) and I'm irritated by the fact that the three things that most appeal to me are the MicroFreak, the KeyStep and Pigments. All, of course, by Arturia.
There's a saying: "Fool me once, shame on you; Fool me twice, shame on me". That's how I feel. If the MB update comes out VERY soon and is VERY good, I'll probably throw logic to the wind and buy more Arturia hardware (I'll probably be too late for the current deal on Pigments' so that's out of the window) but, at the moment, I'm looking for anything NOT by Arturia (or NI). Arturia need to do or say something to make it up to us 'early adopters' - to restore trust at least.