9to5Mac notes that an analysis of the code for the chip reveals that it will include some Samsung components.
Interestingly, it appears that Apple will again work with Samsung for this new chip. The main system-on-a-chip will include some Samsung components- at least to power the display, according to analysis of the above code by a person familiar with Apple’s chip design process. This contrasts with a rumor from earlier this year (like every year) claiming that Apple will switch to TSMC on the A7 processor.
The source also notes that roadblocks in relation to processing speed for the A7 and A8 chip have been resolved.