Just spitballin' here, but I'm thinking we might see it around this time next year?
Makes sense to me.
In Fleet Captains they went with the Enterprise A (for Kirk and Co) and the Enterprise E (for Picard and Co) in the initial release.
They did the same in Tactics I and released the Enterprise D and the Enterprise (no bloody A, B, C, or D) in Tactics II.
No reason to bunch up the big name draws when you can do them in multiple sculpts.
I have no fear, and believe that we'll be seeing the A and the E in due time.