It seems to always be my luck that no matter what class I'm flying I'm near the screaming babies. Does the A330 - 300 have premium economy do you know?
The 330-300 does not have premium economy, and there are no plans to equip it with either. Actually at the moment no SQ aircraft have premium economy, but shortly they will be progressively introduced to 777-300ER's and A380's.
As for the babies, only 2 of the 5 young children were noisy for the flight. I tend to be fairly tolerant, although these 2 were probably the most persistent crying, no screaming, babies I've experienced in all my years of flying. So I know what the worst case scenario is now. But next time I take that particular flight (SQ 208 from MEL, at 18:30) I will go for a seat further back.