But the US is very different from singapore and that's why they need apple pay cash. Bank transfers aren't as straight forward as singapore's Paynow or FAST transfers, which is why apple pay cash won't do as well here.
I think if HSA can approve fast enough for whatever grounds they do that for, we can get around the same time as the US launch.
The reason why they mentioned only available in USA is probably because it's all but confirmed.
Having said that, Apple Pay Cash...