Yes. The iPod Nano is the replacement for the Mini. It uses flash chips from Samsung to get the 2 and 4gb sizes. Samsung is aparently offering Apple a great deal on the chips.

I'm actually tempted by the Nano, as my biggest complaint with the Shuffle is the lack of a screen. It's not a big deal on the motorcycle (where I need a flash based player since hard drives don't like the 5-7k rpm vibrations of my motor), but I have been using the Shuffle a lot for Podcast playback in the car, instead of bringing the empeg inside to sync podcasts to.