If parole is granted, release typically follows relatively quickly, but the exact timeline varies and several things have to fall into place first.
The two biggest factors are approved housing and confirmed release conditions. The parole board has to have a verified, acceptable address where he will be living, a parole officer assigned in that jurisdiction, and all of the paperwork processed before they will authorize the actual release date. If everything is already in order, release can happen within a week or two of the board's decision. If the housing situation needs to be verified or any condition of release is unresolved, that process takes longer and the release date gets pushed back accordingly.
This is why starting the reentry preparation well before November matters. Make sure the housing situation is solid, documented, and ready to be reviewed. If he will be living with you, your address, living situation, and potentially your background may need to be reviewed as part of the parole approval process. Getting all of that confirmed before the hearing gives the parole board one less reason to delay.
Work or a plan for employment is another factor that can influence both the decision and the timing. Have as much of this lined up as possible heading into November.