It would appear that the MO of Apple is to NEVER allow OTA radio to be a function of an iPod, which is sad. But IMHO the iTouch needs some more functionality, beyond radio, to lure me back to Apple PmP's. I want every feature present on an iPhone to be on an iTouch, sans the phone, including GPS, double cameras, voice recording, and internal speaker. I know it is a lot to ask for, but their prices are premium, and their interface restrictive. I expect a LOT from them.
ZuneHD has a nice interface, crappy software, but that oh-so-sweet HD radio. Sure, I could wait for the other companies to catch up and get portable HD radio technology, like Cowon (which might be the best PmP company out there), but I am getting a little impatient.
But you are right: I should at least wait for THESE devices to come out before blowing a wad of cash on a potential brick...