Hi there!
When a new update releases for Microsoft Flight Simulator 2024, you will be prompted to download this update via the platform you play on. We’ll also ensure to announce about any updates on our social media platforms, website, and here on the forums too! Microsoft Flight Simulator 2024 Release Notes - [1.1.9.0] Available Now - Official Microsoft Flight Simulator / News & Announcements - Microsoft Flight Simulator Forums
Thanks
The MSFS Team