Oh, and there's a couple of other Opie roms out there specificaly for the 5600 if you look around.
What alternative ROMs are actually available for the 5600? OpenZaurus's 3.3.5 README says its not ready (not for end-users, anyway). Zynergy works, but I'm not clear what it's advantages are. Everything else seems to be for the 5000, 5500, or clamshell models only.
I just got my 5600. Because I don't have any data on it, I can afford to be a real ROM-slut, but I don't really see any options (except maybe Zynergy).
By the way, I don't think that Lycoris's web page on their Pocket PC has gone down due to the /. effect; I think they decided to delay the product. There is an update on the linuxdevices article that says it will be released in the 2nd quarter of 2004. At my company, that wouldn't be until at least March.