Important new features along with improvements to core functionality in Version 14.3 of Wolfram Language and Mathematica make this a big release. In this version, new and improved functions contribute to the overall integration of many areas of the language. The Overview highlights new functionality for interacting with LLMs and the new full support for dark mode, along with additional notebook and interface features. A full webinar is devoted to what's new in tabular, visualization and graphics functionality, with other presentations in the series covering the latest in mathematical computation and geometric modeling and computing.