I don't know, I wish we could get some updates. I sent Matt an email asking about a new timeline a few days ago, but never heard back from him. I really want my NS & CP ones!
All the FVM engines I have gotten have arrived at my pusher (Feather River) around the end of the month. I wouldn't get too excited until the next month. CP and CSX should be here shortly, NS around the end of July.
Mine usually show up at the LHS within the first week of the month after they're supposed to ship, so if the CSX is due in May, it'll be at the LHS by June 7th or so.