Why is the TC-Helicon MP-76 discontinued? any chance to get a "Mic control adapter" with 4 buttons too?

Hi community.

As I wrote in the subject, I really wonder why that amazing Mic got discontinued too soon, considering that the older models (76 and 70) are still in the market.

Now, I'm really worried about what would happen if the only MP-76 that I've got 2 years ago gets damaged or something (I'm from Chile) and that's why I really wish to buy an spare one, or ask about if there is any plan (maybe it's ongoing already) to manufacture an upgrade of the "MCA100 Mic Control adapter" to a version with fully 4 buttons.

I really need it, for my live performances the 4 buttons are a MUST to have.

Best regards everybody!