Keg,
I've heard around 30 extra training slots to be announced this week, with the following residuals making a total of about 70. Obviously this will clean out some of the A330 S/O ranks, which in turn makes sense that they are boosting new pilot recruitment numbers.
If I was joining as an S/O now though, I'd forget about a sideways move to the 744 or 380 completely. It seems the guys there will need a crowbar to be prised away from the back seat of those machines!
As for 737 pay, I concur with Chad. With divisiors creeping up and bonus/incentive payments, many 737 F/Os are making $200k+.
Cheers