New software specifically released for the Zaurus is indeed very rare nowadays, but it still happen from time to time, like the dictionary software from koan, Alarmz's releases by greguu and new kexecboot versions by ant. Also, there are a lot of already built and updated packages for ARMv5 devices which run Arch Linux, as the Zauruses. I try as much a possible to hunt down such releases, so that we have a central "hub" for all the news about the Zaurus and other devices.
Varti