I don't think it's getting new sheet metal like the 2019 1500's did. But the rear door looks larger. It remains to be seen if it's actually larger in the rear with a flat floor like the rebel.
The Rebel has sharper lines, this truck looks like it's using the current sheet metal with the new design elements grafted on.
The Fairlead is interesting, perhaps moving to synthetic?
The Parking Sensors look odd and it does have a sonar sensor near the fairlead, so this is likely a production model and not a test mule. But it could be a test mule, however, I doubt it.
Also, notice up close, there is a Camera under the Ram logo and there is a Camera attached under the side mirror, likely a wide angle lane change camera.