> There's no widespread perception that C++14 or later bring compelling language improvements. I would argue the opposite: C++11 is a fairly different paradigm

> There's no widespread perception that C++14 or later bring compelling language improvements. I would argue the opposite: C++11 is a fairly different paradigm to C++03, and upgrading an existing code base is a sizable project. But once you get hooked into the concepts it introduces (auto, lambdas, templates, constexpr), each subsequent revision of the language standard introduces some improvement to these concepts that deals with unpleasant edge cases the earlier revision had, so each of them promises to make your existing use cases simpler, at a moderate rewrite expense.