Nothing had been finalized- but this was the prototype I proposed.
Key things that I don't think there was any dissent on at the leadership level:
-16" barrel w/midlength gas system
-bayonet lug
-single stage trigger, either GI or aftermarket with minimum 4.5lbs trigger pull (making it service rifle match legal, and typically single stage is most reliable than two stage, even acknowledging that there are very reliable two stage triggers now days)
-rail (either picatinny or MLOK)
-Waterproof, submersible optic (not water resistant, emphasis on submersible. We've had multiple events we're people discovered their "water resistant" optics were ruined simply from heavy rainfall) or iron sights.