Not really new news. I would say that about 200 FC and CC there already with perhaps a target of 500 within the next 6-12 months. Add in the ground staff and engineers already there and 1000+ jobs are filled.
I would imagine that there are usually around 15 planes overnight in SYD atm so where are they going to park the other 10? Not much space unless you start kicking out all the corporate jets and night freight.