How much will the delays in delivery dates of the A380 and re-schedule of A350 EIS will really cost Airbus?

First, they delayed the entry in service of the passenger A380 with Singapore and Emirated by 6 months (supposedly because of the complexity of the sophisticated interiors).

Now FedEx will get their A380F 6 months later (damn FedEx with their sophisticated interiors).

Also, the re-design of the A350 will have an impact of the delivery dates of the A350s sold to-date. Quoting myself from another thread:

The A350s sold so far were probably offerred at substantial discount and/or favorable financial terms. I'm not implying that Airbus gave away these airplanes for free, but lower price was probably the only real advantage that Airbus could offer for the "old all new" A350 against the B787, which is (was) a superior airplane from the technical standpoint. Also, its pricing structure was based on an estimated $4b development cost - now that the development cost has doubled, it could mean that these 100 or so A350 were sold below their actual cost.

On top of the pricing issue, Airbus will have to compensate the airlines for delivering the airplanes later than originally committed.

Now, the "new all new" A350 is superior than the "old all new" one so it probably can be priced higher - however I don't think Airbus "popularity" with airlines would increase if they tell the customers who bought the A350 that they have to pay more for the airplane they already bought.

So while the "new all new" A350 is a move in the right direction to compete against the B787, the first 100 airplanes sold so far could actually represent a substantial financial loss to Airbus.