The A14 Bionic is here, and it is the world's first 5 nm chipset. The new SoC, which debuts in the fourth-generation iPad Air, boasts 11.8 billion transistors, a 16-core Neural Engine, along with new CPU and GPU cores. The A14 Bionic should offer upwards of 40% better CPU and 30% better GPU performance than the A13 Bionic, too.
https://www.notebookcheck.net/Apple-unveils-the-A14-Bionic-the-world-s-first-5-nm-chipset-with-11-8-billion-transistors-and-sizeable-performance-gains-over-the-A13-Bionic.494302.0.html