Yes, you'll be emailed—if you were on the old Subscriptions pricing and are using Billing now, the emails are going out now (most have already been sent). Email me at edwin@stripe.com and we can also check.
And to be crystal clear, the emails should be done sending today. The changes—which will take effect on January 15—only apply to businesses that have had at least $1M in lifetime billing volume (or will cross that threshold this year). All others can continue to have Billing for free.
If this million dollar threshold had been made clearer, I imagine a decent chunk of the people who are upset by this change would have reacted differently.
