No, no one, including the FCC, knows.
The 30 day comment period hasn't officially started yet (waiting for the Federal Register to 'publish' the NPRM)
When it is published, 30 days for comments.
Possibly 'reply comments' allowed after that time
THEN, the FCC will actually create new rules (The current NPRM offers NO rule changes, only 'discuss this'), and most likely that actual final rule change will go through comments again.
End of Line? Months. And we have no idea what actual changes will be made. Though I feel pretty sure the FCC would never have proposed 'no license' unless they'd already decided to do that, and I haven't seen any comment that offers a real, meaningful reason not to. Especially if they remove repeaters. (Which I'm not in favor of them doing, but...)