I can't speak anything regarding the PARB and timelines. But I received/accepted my electronic CJO on 30 Apr and have not received an email yet to confirm my start date, which should be somewhere around 6 weeks from the email. So far, this matches up with tennisguru's comment above. In the meantime, I'm enjoying the remainder of my terminal leave and time with the family, something I really haven't been able to do since I joined the USAF 20 years ago.