This is a revised and updated version of the original Quantum Density Limit (QDL) theory, offering further clarification and refinement of the mathematical framework. The paper introduces new insights into the behavior of matter under extreme compression, connecting General Relativity and Quantum Mechanics. This version strengthens the theoretical foundation and provides additional perspectives on singularity formation, quantum gravity, and the potential applications of the QDL theory. This update includes a more detailed comparison with existing models and introduces new predictions for future experimental verification.