The video tutorial discusses the migration to C20, focusing on the current state of compiler support as of the end of 2019. It highlights that most compilers lack full support for C20, with GCC and Clang offering the best, albeit experimental, support. The video examines specific features like concepts, modules, and coroutines, noting partial support in various compilers. It also covers C20 library features, pointing out that some, like text formatting, are not supported yet. The tutorial concludes that migration to C20 is not feasible at the moment due to limited compiler support, but provides guidance on using current compilers to determine available features.

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