Anek did the same thing with me in February, albeit moving from 13:00 to 14:00.   They didn't mention it on their website (the "Sailing Updates" section would be the obvious place!) and I only found out by looking at their timetables.They seem to be a law unto themselves with little thought for keeping passengers informed.

Bit the bullet and rang Minoan from UK. The Ancona departure has moved to 1400 but they hadn't got around to telling anyone yet. Don't bother trying to switch to Venice as that timetable is unavailable

We have a booking with Minoan from Venice to Corfu in May. After reading about the cancellation of Venice online, I emailed them to have it confirmed. We have been offered the Ancona/Igoumenista route with 10% off and free food!! to compensate for the extra fuel and toll charges.
The Venice ferry sailed at 6pm and the Ancona sails at 2pm which means that with our ferry and hotels already booked we won't reach Ancona in time. So we have to completely reshedule our journey and add an extra night on the road, as well as the extra cost of getting from Igou to Corfu. What an inconvenience and I wish we had booked the Anek instead.
We travelled with Anek in January Venice/Corfu and they cancelled Corfu, but they did organise and pay for our ferry to Corfu. A better deal than the extra hundreds of Euros our next trip cost.
The ferry companies charge the same price whichever port you go to, so we lose out and they gain.

Must be a size limit on emails, so rest of schedule here (!):

From 23/06/2012 till 26/07/2012

	ANCONA		IGOUMENITSA		PATRAS
	DEPARTURE		ARRIVAL		ARRIVAL
CO	MON	18:00	TUE	13:00	TUE	19:00
CE	TUE	18:00	WED	13:00	WED	19:00
EP	WED	18:00	THU	13:00	THU	19:00
CO	FRI	18:00	SAT	13:00	SAT	19:00
CE	SAT	18:00	SUN	13:00	SUN	19:00
EP	SUN	18:00	MON	13:00	MON	19:00

No departures from Ancona on 23/06

From 26/07/2012 till 05/09/2012 (DAILY DEPARTURES)

	PATRAS	IGOUMENITSA	ANCONA
	DEPARTURE	DEPARTURE	ARRIVAL
CE/CO/EP	16:00	22:00	15:00

From 27/07/2012 till 06/09/2012 (DAILY DEPARTURES)

	ANCONA	IGOUMENITSA	PATRAS
	DEPARTURE	ARRIVAL	ARRIVAL
CE/CO/EP	18:00	13:00	19:00

CE: CRUISE EUROPA  CO: CRUISE OLYMPIA  EP: EUROPA PALACE

VENICE ROUTE

From 17/06/2012 till 13/09/2012

PATRAS		CORFU		IGOUMENITSA		VENICE
DEPARTURE		DEPARTURE		DEPARTURE		ARRIVAL
THU	00:01	THU	07:00	THU	09:00	FRI	08:00
SUN	00:01	SUN	07:00	SUN	09:00	MON	08:00

From 18/06/2012 till 14/09/2012

VENICE		IGOUMENITSA		CORFU		PATRAS
DEPARTURE		ARRIVAL		ARRIVAL		ARRIVAL
FRI	14:00	SAT	12:00	SAT	13:30	SAT	20:00
MON	18:00	TUE	20:00	TUE	21:30	WED	05:00

 

What a fiasco it all is! We have opted now to delay our departure until June when the ferries run from Venice to Corfu (as our original booking) It'll save us hundreds of pounds and hours on the road. Let's hope nothing get changed!
The last couple of years we have been able to book early for all our trips for the year using the high discounts that were offered. A thing of the past now it seems.

My family want to see Venice - not Ancona. Won't do Ryanair either but thanks. It is an extra 100 miles ~2 hrs to Ancona than Venice and road not as good for last 80 miles.

Interesting - looking at the timetable from Ancona, it would appear that Minoan have reduced the speed of their ships, from roughly 30 knots to about 25 - in order to save fuel? Martyn

Would also be interesting to know how many delays getting in to Venice there have been due to fog stopping the ferry going down the canal.  We were held for 11 hours in November and this sort of delay could prove expensive for lorry driversif it occurred regularly.  This could also be a reason for lorry drivers preferring Ancona.