Will there be an iPhone 5S-C?

The iPhone 6 is right around the corner. So what does that mean for the iPhone 5S?

It depends on who you ask.
Unlike last year, when most of the pre-announcement attention was on the lower-priced iPhone 5C, this year the rumor mill has focused on the higher-end iPhone 6 phones. Apple (AAPL, Tech30) is expected to make two iPhone 6 smartphones, both of which would be larger than iPhones of the past.
There's no clear consensus about what will happen to the iPhone 5S when the iPhone 6 goes on sale.
Is there a plastic iPhone 5S-C in our future? Or maybe an iPhone 6C? Will it get a price drop? Will it disappear from the market?