Heatblur has confirmed that their F-4 Phantom journey will continue beyond the F-4E variant, with general plans for more Phantom models in the future. They have explicitly stated that they plan on making a Naval Phantom variant, acknowledging the strong community desire for a carrier-based model.
While no specific next variant (like the F-4B, F-4N, F-4J, or F-4S) has been officially confirmed as the next in line, the development of other major projects like the A-6E Intruder and Eurofighter is progressing Bazoocam. These commitments mean that any subsequent Phantom variant will be a future project, but the intent to continue developing the "Phantom family" remains part of their long-term vision.