For those who are in the hold pool there are 64 pilots ( captains and first officers) going to be transferred from the A330 to the 777 and no recruitment on the A330 to replace these pilots. The plan was to recruit 150 this year however with the slowdown in deliveries due to the Boeing strike combined with the recession and the slipping of the next batch of A380 deliveries the number of new pilots required will be small.
If you have significant time in Boeing aircraft then you will have the best chance of being called.