Various Cool New Things

Export permission, end of RSA patent
OpenSSH included and enabled by default
POSIX ACLs and File Attributes
PXE support (see terminal room)
AGP driver
Improved audio driver
3Ware ATA RAID driver
SCSI RAID drivers (Adaptec, Mylex, DPT)
ATA 100 and tagged queuing support
USB and IPv6 installation support
GDB hardware watchpoint support
Soft updates snapshot support
Millions of additional NICs