Are there any good promotions for transferring in new money into SG banks?

If your amount is big enough, about $250,000 (or $300k for some banks) to get you privilege banking, email the banks about promotions.

Most of them do not openly advertise on the on-going promotions.
Do choose a bank that you like, for the long term. The promotions of a few extra thousands of dollars may not be justified if you hate the bank.