This tutorial enables you to remove apps from the 6G iPod Nano Springboard and insert blank spaces into the springboard. The iPod Nano in this running the current 1.0 firmware and is Windows formatted, have not yet tested this with a Mac formatted one. Its fairly basic and simple, but shows that booting with a user modded file is possible and is a nice proof of concept and is the first small ‘hack’ as such for the new iPod Nano.
So yea if you are feeling adventurous, and have a 6G iPod nano which is Windows formatted, you can follow his tutorial posted here. Alternatively, you can also follow the steps as shown in the video walkthrough embedded below.