Correct!
Linux is the open-source community reference OS, so you're sure to find support and material for your Zaurus in this Community.
Obviously you must enter effectively in the source world, and get next to software development world - we may say that we're having on the zaurus in these days the same situation old linuxist found some years ago: so we can expect to find an even better and user-friendly situation from now on.
I'm getting pretty good satisfactions from my zaurus - I'm not a geek, and I didn't get my zaurus as a new toy: I wanted - and actually GOT - a development/study/comunication tool in my pocket.
I use it exactly as a laptop, for coding, web browsing, and some entertainment too
Install an X server on your Zaurus, and you'll have everything you wished to find, maybe more
Good luck