Hey yo, i just called Maxis again to reconfirm. They confirmed that it will be out by the end of this month but they are keeping a very tight lid on the launching date. They also said, it will be soon, the date is just around the corner.

I dont think you can use the celcom number if you've subscribed to maxis. If you buy the iPhone 4S through maxis, you'll need to buy their plan, and by that mean, you have to use a Maxis line. But if you want to keep your number, i suppose it's no problem.

you have to transfer your number to maxis before signing the iPhone 4s contract with maxis.
bottom line is you need to have a valid maxis number