The OS X 10.4.8 upgrade appeared for me in Software Update this afternoon. Here’s the skinny…

The 10.4.8 Update is recommended for all users and includes general operating system fixes, as well as specific fixes for the following applications and technologies:

– connecting to wireless networks using the EAP-FAST protocol
– Apple USB modem reliability
– using OpenType fonts in Microsoft Word
– compatibility with 3rd party USB hubs
– scanner performance
– RAW camera support
– printing documents with Asian language names
– performance of the Translation widget
– broadband network performance
– security updates

For detailed information on this Update, please visit this website: http://www.info.apple.com/kbnum/n304200.

For detailed information on Security Updates, please visit this website: http://www.info.apple.com/kbnum/n61798.