Finally 10.4.9 has been released to the public
The 10.4.9 Update is recommended for PowerPC and Intel-based Mac computers currently running Mac OS X Tiger version 10.4.8 and includes general operating system fixes, as well as specific fixes or compatibility updates for the following applications and technologies:
RAW camera support
Handling of large or malformed images that could cause crashes
Image capture performance
Mouse scrolling and keyboard shortcuts
Font handling
Playback quality, and bookmarks in DVD Player
USB video conferencing cameras for use with iChat
Bluetooth devices
Browsing AFP servers
Apple USB Modem
Windows-created digital certificates
Open and Print dialogs in applications that use Rosetta on Intel-based Macs
Time zone and daylight saving for 2006 and 2007
Security updates
This is installable on intel pc's with 10.4.8 as well, just backup your kernel and applesmbios, ioatafamily, ionetworkingfamily and system kexts, install the update, then replace the files with the ones you just backed up. And voila, 10.4.9 on you hack.