Found this link at Korg Forums, and among the info it seems like there will be a OS update v1.4 adding some missing and new features for Pa5X coming soon. 👍

https://www.korg.com/us/news/2025/0121/

Quote:
- Quick Record: Effortlessly capture your ideas with the new Smart Recording Environment.
- Full Song Edit: Enjoy a complete editing suite for perfecting your compositions on Pa5X.
- Style Creator Bot: Instantly generate custom styles from your MIDI files.

Hi,

Where is OS 4? Boy seems to be taking forever. This is a flagship model very expensive, I love it but support for improvements seem to be taking way too long

Coding for a firmware update takes a lot of time and effort, (They have to make sure it doesn't break something else, so a lot of testing is also done) and the more sophisticated the firmware (Arrangers are sophisticated) the more time it takes.

Download Python here and learn how to program (Code) some basic programs, you will then see just how time consuming it is.

Bill