The cover is completely different. The sales reps hated the old cover. Strings are a concept . Therefore I chose the string class. It is safe and convenient.
Students master it quickly and can move on to learning more computing concepts.
Not all compilers support these constructs yet. My recommendation is to introduce the keywords and use them initially, especially for the topics that students find confusing such as De Morgan's law. Subsequently, I suggest that use what you prefer, and let the students do likewise. They are only new to you, not to your students. Here is a list of currently supported platforms.