Yesterday I just posted the iPhone 4S ROI from Maxis, and today DiGi announce their ROI too. You can register your interest with DiGi with either 16B, 32GB or 64GB and black or white in color. Same to Maxis, there was no firm price or plan yet but it will be announced very soon. Register now to obtain the latest information about iPhone 4S from Digi here.
You may interested to register your interest with Maxis too. Maxis iPhone 4S ROI