According to a report from Soya Cincau in Malaysia, it appears that Samsung has sent out a letter to the local media informing them of the delay of the phone’s launch. The official launch was set for the 19th of August, but according to the letter, Samsung has decided to push the delay to some time in September with no specific dates mentioned.
The letter mentions that this is due to the demand for the phone which has led to a global supply constraint. However it also notes that those who pre-ordered the phone between the 8-10th of August will still have their orders fulfilled, so if you are one of those customers you will be getting your phone in time.
It is unclear if only Malaysia is affected by this or if other markets are similarly affected as well, but if anything we suppose it only goes to show how popular the phone is.