Hmm, they don't say what's new, no changelog.
From the readme;
5. What's new in this Update
----------------------------
This is a (not necessarily complete) list of updated components
included in this update:
- Updated Installation Utility program.
- Updated PATA and SATA drivers.
- Improved DOS stability and speed.
- Updated copyright notices.
- Fixed Amiga shared object issues.
- Support for AmigaOne keyboards including boing key swap feature.
Set keymap_swapaltamiga to "on" in your firmware to enable.
- Updated Intuition and GUI components.
- New consistent full release string including update number.
- Updated Finnish keyboard support.
- Updated AmiSSL certificates.
- Updated USB stack with USB 2.0 (EHCI) support.
- Improved Sam460ex support including sound driver.
- I2C support for the Sam440ep and Sam460ex platforms.
- Updated and improved Warp3D support.
- Faster 2D graphics support.
- Various kernel fixes for increased stability.
- Updated MUI with many new features to make porting MUI 4.0 based
applications simpler.
- Improved notifications support.
