This is a new version and not only a simple update as it features, among others:
JXFS filesystem with the support for drives and partitions of multiple terabyte size
New and improved DOS functionality (full 64 bit support, universal notification support, automatic expunge and reload of updated disk resources)
Improved 3D hardware-accelerated screen dragging
Intelligent memory paging
Hardware compositing engine (Radeon R1xx and R2xx family)
Implementation of the Cairo device-independent 2D rendering library
Improved Workbench functionality
Reworked Warp3D Radeon drivers with new functionality
Reworked AmiDock with true transparency