It was no surprise that the 5c is discontinued and it seems that there will not be a 6c replacement.
I'm hoping to replace my 5c with the new 6s at the end of the year.
With Apple having an iPad Mini, iPad, and now iPad Pro it would've made even more sense for them to have an iPhone 6C, 6S, and 6S Plus to mirror that level of choice in size.
I'm very fond of the 5C. My wife has a white one. I have a 6, but I still like her 5C a lot. It feels great in the hand without a case, something I cannot say about my 6 (because of materials/shape, not size).
I'd love to see them put out another C varient someday. Maybe in 2017 we'll see a 7C, but I doubt it.