Apple has released iPod Updater 2006-01-10 which delivers:
• iPod Software 1.1 for iPod
• iPod Software 1.1 for iPod nano
• iPod Software 1.2.1 for iPod with color display
• iPod Software 1.4.1 for iPod mini
• iPod Software 3.1.1 for iPod with Click Wheel

For all other iPod models, iPod Updater 2006-01-10 contains the same software versions as iPod Updater 2005-11-17.

Important: After downloading the iPod Updater software, connect your iPod to your computer and launch the iPod Updater application. If iPod Updater determines that your iPod needs to be updated, click the Update button to install the latest software on your iPod.

Features of iPod Software 1.1 for iPod, and iPod Software 1.1 for iPod nano:
• Support for the iPod Radio Remote
• Bug fixes

Changes to iPod Software 1.2.1 for iPod with color display, iPod Software 1.4.1 for iPod mini, and iPod Software 3.1.1 for iPod with Click Wheel:
• Bug fixes

iPod Updater 2006-01-10 is available via Software Update and also as a standalone installer. More info and download link here.