Huh? There is no such alternation between new features and feature freeze releases. In fact, C++26 will very likely get reflection as a major new feature. In comparison, the biggest core language feature in C++23 was probably "deducting this (explicit object member functions)".

The only thing that keeps Contracts out of C++26 is that they might not be finished in time (they'll need to be handed over from Evolution to Core by the February 2025 meeting, and then make it through Core review during the summer 2025 meeting).