From what I remember, during the last landing, Elon announced that the Merlin engine can throttle down a lot farther than people though. (IIRC, it can go down to 30%, rather than the 70% figure bandied about in internet rumors.)
This means it's possible for the Falcon to do a constant velocity descent, rather than having to do a hoverslam.
This means it's possible for the Falcon to do a constant velocity descent, rather than having to do a hoverslam.