Improved cockpits are 1.15.4 version, which is mod of the 1.15.2. there are no newer version of this mod for latest version, provided link contain just some features. and It's true that these features will be part of the 1.16.1 soon (same as Mi-28 instruments).
You can check for updates 1-2 months later, I am in the process of code migration but can't provide any estimations I am afraid - too much stability and compatibly issues makes process really slow. And boring.