Dieter did some digging over at PreCentral.net and goes through how Palm re-hacked the iTunes sync. It looks pretty much like what we figured. Palm is spoofing the Apple USB Vendor ID so as to present as an iPod. This is one step deeper than last time, where they still ID'd themselves as a Pre. In a further display of chutzpah, while violating the prohibition against misuse of USB vendor IDs themselves, Palm has filed a complaint against "another company" (we're guessing Apple) for improper use of same.
So let's follow the logic here. Palm is seemingly objecting to Apple using the USB vendor ID to filter out non-Apple devices. Palm doesn't feel that filtering is in keeping with the openness of the USB standard.
What's the alternative, however? For Apple to maintain control over their own software by putting an authentication chip in every iPod/iPhone that handshakes with iTunes before syncing? Or to agree to freely license iTunes interoperability to every device maker on the planet?