It is being reported by WrestleVotes Radio that SmackDown will be moving to a three-hour time slot starting in January 2025. The show has officially moved to USA Network as of last week and is no longer on FOX.
The move to three hours in January is the same time that Raw will no longer be on USA Network and will head to Netflix. It was officially announced by WWE that Raw will be only two hours from Oct. 7 through December. It is unknown if it will go back to three hours once it hits Netflix.
As for NXT, it will be moving to the CW Network on Oct. 1 and it will no longer have that run over time it has now currently on the USA Network. So it will be strictly kept as two hours.
WWE has not confirmed the three hours for SmackDown at the time of this writing.