Nope. I think we're just supposed to pretend the Beyond version is the ship that rebuilt at the end of Into Darkness, since they share the enlarged impulse engine.Thanks. I prefer the lower one a bit, which I infer is the Beyond version. Was there ever an in-universe reason given? Maybe in the tie-in materials?
The change was made fairly late in production, and most of the screengraphics on the ship depict the original configuration.