The report echoes rumors about the possibility that Apple may launch two iPhone models in 2014.
The biggest difference between the iPhone 6 and the device that will assume the role of an iPhone phablet, lies in the size of the display.
The iPhone 6 will sport a 4.7-or 4.8-inch screen, while the phablet will have a 5.5-inch display.
The display of the iPhone 6 will come with full HD resolution (1,920 x 1,080 pixels) while the bigger model is reportedly set to pack a 2K “quad HD” screen (2,272 x 1,280 pixels).
The KDB report also details other technical specs such as the internal memory which will be available in variants of 16, 32, 64 and 128 GB.
The iPhone 6 will have a 64-bit A8 processor, 2 GB of RAM, a 1,800 mAh battery and an 8-megapixel rear camera and a 3.2-megapixel front-facing camera.
Regarding the release, KDB expects the devices to be unveiled between Q2 and Q3 this year.