Please ask Jeff! I have to retake REG and I want to take it close to when the score will be released so I don't have to wait in agony. Even though I failed on this last attempt, I was in high spirits, most likely because at least I knew.
Q1 will probably be similar to every other Q1 score release time line since Computer Based Testing started. Q2 will probably change if the continuous testing starts then. Since normally the last day of testing would be 6/10/2020, and if you retook a section shortly after that, you would have to wait over 2 months for a score release. That is probably the reason for the delays is to setup a new release schedule.