Relying on DigiTimes we can suspect just that.
“NAND flash vendors have increased chip prices citing strong demand for new smartphones particularly the iPhone 7 featuring up to 256GB of storage, according to industry sources. Prices will keep soaring until the fourth quarter of 2016.”
If that’s true then what it means for us and how prices of new iPhones can shape?
Answer for forst question is really simple – more storage to recompensate lack of memory card slot. But, in the margin, 256GB is what we get in entry-level MacBook 2016!
Second question is a little bit tricky. Answers are two:
– prices of given memory variants will go one point down (so because of lack of 32GB version there will still be same 3 caps);
– 256GB versions will cost relatively more then 128Gb versions (what means taking caps up).
For final answer we will have to wait untill September 7th because then Apple will probably launch iPhone 7.

Source: TechRadar and DigiTimes