The upshot of all this will probably be that current 737 captains and 400 FOs will take the 330 commands and east coast 737 commands.
A330 FO slots will probably go to current 737 FOs.
If you're a SO you'll get a shot at a PER 737 gig or SYD/MEL 737 if you're lucky/ senior enough.
Again, I'm completely underwhelmed by the munificence that continues to flow from on high.