It's believed that the OLED iPhones this year will support the Apple Pencil and have 512GB storage.
Apple's take on the high priced iPhone from last year seems to have gone down well, showing customers don't mind spending $1000 or more. A company called TrendForce seems to think that Apple will try and increase the appeal of this year's iPhones.
They believe that the two OLED iPhones will include Apple Pencil support, that although will be of limited use, would be great for quick notes. This would work great on the 6.5 inch model. Users have wanted Apple Pencil support for a few years now, and it could finally be coming.
Secondly, TrendForce predicts both of the OLED iPhones to have three storage capacities. There will be the 64GB and 256GB variations from this year, plus a new 512GB, which is also on the new Note 9.
These features will not be coming to the LCD iPhone, which will have an identical design to this year's iPhone X, with 3GB of RAM. The pricing could start from $699.