At the moment, the F28 is MSFS 2024 compatible, which is built around an MSFS 2020 package that is made compatible with MSFS 2024. Therefore, it will still appear in the main menu with the MSFS 2020 style thumbnails and the "MSFS 2020" tag.
An MSFS 2024 native update is currently in development, though, and shouldn't be too far away.
The current status of all of our MSFS 2024 native updates can be found at the following link: https://www.justflight.com/articles/just-flight-addons-msfs-2024-compatibility-status
Mark - Just Flight