Release Notes: Various bugfixes and enhancements to kernel core services (e.g. registry, system information routines, sync primitives like guarded mutex, I/O support, and others). An initiative has been started to fix the remaining unstable parts of the kernel: Memory Manager, caching code, and filesystem driver APIs and other dependencies of Mm. Introduction of a new Portable Structured Exception Handling mechanism (PSEH 2.0). Various GDI drawing problems were fixed.
Release Notes: x64 architecture support was improved. A real MSVC compiler support project was started. Kernel improvements and bugfixes were made in quite a few parts: Configuration Manager, IO Manager, KE, Memory Manager, Object Manager, Process Manager. The network stack was improved with leakage fixes and increased functionality. Filesystem driver fixes were made, making them more compatible with the Microsoft NT cache manager. Win32 subsystem improvements and synching of most of the Wine usermode DLLs were done.