It seems Samsung has increased the cost of its processors that it supplies to Apple for use within iOS devices. The first thing that comes to mind is that this has been done out of malice or as payback to the legal issues between the two companies. However, if this is true then Samsung is going to have an axe-shaped slit in its feet.
Apple has been said to be in talks to find another foundry to manufacture its chips. It already designs its own chips so all it needs is someone to manufacture them. With rumors of this going around, Samsung would be a fool to increase the prices without a sensible reason as that would only speed up the process of Apple going elsewhere to get its chips made.
I just think the rise has come out of increase in the price of the parts or something to that effect. Samsung would know better than to alienate its best customer.
Update: And Samsung does know better. A company spokesperson has confirmed that Samsung has not increased the prices.