Everything about future firmware updates for the BMCC is unlikley to be "confirmed" until,
and if, they are published. That's how most companies approach the topic of firmware updates.
BMD has said that their goal is to eventually implement various features via firmware update(s), but goals are not guarantees. You're unlikely to get an absolutely firm commitment on most firmware features before the fact, and there's always a possibility there might not be
any firmware update(s).
I'm not saying it doesn't hurt to ask, but instead, what matters is what actually happens. Don't make purchase plans for any product based on "hopes" or "promises". Buy a product if what it actually does is what you want or need, and at a price you want to pay.
Meanwhile, BMCC feature requests can be posted here:
viewtopic.php?f=2&t=265