Update (9AM, 11th September) - SingTel's Registration of Interest for the iPhone 5S and iPhone 5C is now available at www.singtel.com/iphone
SingTel will be launching a website for customers to register their interest for the new iPhones at 9AM today.
A few forum members managed to register their interest a few hours ago and received confirmation emails from SingTel. As usual, do take note that registration of interest does not guarantee a reservation or pre-order of the phones. Launch details and pricing will be announced by SingTel (and the other two telcos) soon.