Buy first, regret later, you're doing it right 

Welp, looks like even the RM100 got cancelled. Heavy Arms cropped the RM100 part from their post and Playstation Asia didn't mention anything about RM100.
Edit : Nope. Just reconfirmed, they will be giving RM100 afterall, they just couldn't mention it publicly, probably because Playstation Asia is handling every asia country and it would be unfair to give Malaysia "extra money".

Nope, the RM100 is just the difference between previous order vs newer order.
When they started taking order, every single shop was selling it at RM1899 and 2029, but because of currency change, they later on lowered it. In Sony center case, they actually take full preorder amount when you are placing an order.
The comment you are pointing out is just Sony will refund the RM100 in cash (there's no way people will be happy to pay extra just to receive store credit as a return, they will surely give cash or chargeback Rm100). 

As for the RM100 compensation, that was for the delay, and it is a store credit (PSN).
Playstation Asia didn't publicly announce it and other shops didn't do it too, apparently they are under some sort of NDA and weren't allowed to publicly announce until Sony Malaysia says so.

so is it only me that have core unit from sony online store is missing the disk,cloth and RM100 PSN. any core unit buyer got all the item? Thanks