This says their contract is estimated to be completed by Sept 2024:
https://www.defense.gov/Newsroom/Con...ticle/1966024/
That's a few years out. Tacking on a little padding bumps us to 2025.
So, hopefully early to mid 2025.
Seems like an awfully long time to be completely absent from the AR15 market, though. I'm a little surprised that there isn't a single licensed/outsourced Colt AR15 of any flavor.