My sources tell me that the 737NG are going to go over seas for servicing and to keep the troops from going troppo they are going to be given the chance to redeploy to avalon. That would mean that some of the Avalon numbers have to be culled to make space.
The 5th hangar is still a go as they are definately trying to wind down the Sydney operation, so the choice is going to be go to avalon or there's the door. With the changes to the Industrial laws what chance have you got, I'll be moving to avalon.
Hangar 9 will be there before hangar 6,7,& 8.