I just got some of our apps moved to corretto yesterday. Smooth so far on corretto 11, hopefully 8 goes the same way. I think Oracle really shot themselves in the foot with this model, they are going to lose control.
From an Amazon job posting. Seems to imply at least some of the Corretto maintenance would be in-house, at Amazon:
"sharing your findings with the rest of the engineering community, hardening your patches in Amazon's production systems, releasing them as part of Corretto, and contributing improvements back to OpenJDK."
