Well I have news on this front, Cryptic have 'edited' their "Path to 2409" section of the website and removed the part stating the Enterprise-E was MIA. Last thing the Enterprise did now was in September 2408, sent to Starbase 236 after command loses contact with the base.
Well, that's good. I'd hate for the E to go the same way as the B. No Enterprise should go quietly unless she's being retired as a museum piece. And if the Ent-E becomes a museum piece, then we should be able to visit it.