You are correct in saying that a380 and 787 are more for replacing 744 and 767 fleets, however whilst they are introduced there is ineffiiency in the sysyem as many pilots are involved in training and are not actually flying any aircraft, hence you need more pilots than usual to cover the transition period. There is some growth planned too.
Hopefully this is the sign of things to come, short of FlyBe there have been almost no 'tagged' schemes for about 4 years!