Late last week I received a similar call. This was the second update. The previous update the dealer had received from Ineos Australia was around 16 March and he'd phoned me shortly thereafter to say my vehicle was through the batch and hold and waiting to be shipped. This time he said the vehicle had been allocated (a vessel) and should be here early July...
@grenadierboy: I've got no doubts you're exactly right about Ineos Aust. knowing "where and when": standard operating procedure for importers. Indeed they may well have alerted the dealers of full details but with a proviso that no other info. is released to customers... the date the ship is scheduled to arrive vs. actual berthing seems to be a best guess, judging by reports of Ro/Ro carriers riding at anchor waiting to unload in Melbourne and elsewhere... (the delays in Melb. etc must be having a significant knock-on effect on the car carriers' global schedules as a whole.)
I've got to the stage that it arrives when it arrives and they ask me for more money!!