Defnitely. People speculate that only AST will have heavy changes, but the healers are the group that really needs more cohesion between themselves, tanks coming in second and then dpsers (more when the subject is support).
I really think they will take the opportunity to do more than just superficial changes to the other healers. Some more than others, but defnitely we'll see something meaningful to make all four of them work in a more cohesive way.
One thing that really bothers me, nor just about healers, but a lot of jobs out there, is that ARR and HW job quests are making reference (even more in EW) with job actions that are nothing like their original versions anymore. I wonder if they will go back to retcon some stuff.