The Global Interpreter Lock (GIL) in Python restricts the execution of Python code to a single thread, despite having multiple CPU cores available. The GIL was introduced to simplify thread management and protect against race conditions and memory corruption. However, it can limit performance gains from using multiple threads for CPU-bound tasks. Recent efforts aim to remove or modify the GIL, with PEP 703 proposing a new version of CPython without the GIL. This change would allow Python to utilize multiple processor cores more efficiently, especially for CPU-intensive tasks. The proposed solution, biased reference counting, defers reference counting for top-level module objects and designates some objects as "immortal" to improve performance while maintaining single-threaded code execution speed. The Python Steering Council plans to introduce the no-GIL build as an experimental mode in Python version 3.13 or 3.14, followed by a supported option and eventually becoming the default setting within the next five years.