While this ending does make it seem likely that he could come back for Luke Cage season 2 or even The Defenders, if that is the plan, Harvey does not know just yet.
The episode ends with a mysterious shooter successfully using a Judas bullet to hit Cage, with the shooter later being revealed to be Willis Stryker aka Diamondback (Erik LaRay Harvey).
Even though this was the first chance to see Diamondback on the show, his presence was building throughout the previous episodes.
Daredevil season 1 & 2, Jessica Jones season 1, and Luke Cage season 1 are now available on Netflix.