The HPX Project has released V2.0.0 RC1 of HPX – A C++ Standard library for Concurrency and Parallelism . HPX is a general-purpose parallel C++ runtime system designed for applications of any scale. It implements the related C++23 Standard facilities in full and offers the only widely available open-source implementation of C++17, C++20, and C++23 parallel algorithms - including a complete set of parallel range-based algorithms and the full integration of the algorithms with the upcoming sender and receivers interfaces.