Version: 17.2.1 Build Number: (Check Settings > General > About) Release Date: Late December 2023 / Early January 2024 File Size: Approx. 200–300 MB (varies by device) 1. Is This Update Right for You? Do NOT expect: New features (emojis, Journal app changes, etc.). Those arrived in 17.2. DO expect: Bug fixes, security patches, and performance tweaks.