What will the iPhone lineup for 2014 look like?

Will there even be a plastic 'C' model or is it a one-and-done deal? How will Apple categorize the rumored different size models 4", 4.7" and 5.7"? Also is this the year Apple drops the number suffix (4S, 5, 5S) at the end and just go with iPhone mini/Air/Pro or something to that effect?