RAF Tornado GR.4 replacement ?

Hi
I wonder if the RAF and Ministry of Defence are giving any consideration to a replacement for the Tornado GR.4. Surely it cannot go on forever and remain an effective strike aircraft despite the upgrades.
Has anyone any thoughts on a likely replacement. Will attack-configured Typhoons take over the role or will a new type be acquired – the Super Hornet perhaps ? Or does the future of strike aircraft lie in the area of drones ?