I understand the desire for a wireless iPod, but I think the downsides make it very unlikely. Namely, it would be both 1) bigger and 2) hungrier. You'd have to plug it in all the time. WiFi would suck up more energy, and my iPod already only lasts about a day for regular use. If I dock it at work, it maintains a charge longer because it's charging over the USB2, but wouldn't the point of WiFi be less wires, and less docking? Therefore less charging. Hungrier power requirements and less charging without massive improvements in battery technology spells no WiFiPod.
Some sort of remote could be neat, but how would such a thing actually work? Assuming a screen and WiFi like everyone seems to be suggesting, I suppose it would Rendezvous for shared iTunes libraries & shared AirTunes speakers. You would select one of each, and then be able to control the shared iTunes to play music over the specified speakers. You would probably then have to give the remote device permission to control your iTunes in this manner, otherwise people could be walking down the street futzing with different iTunes libraries. In a perfect world they wouldn't have access to your network in the first place to do such a thing, but this isn't a perfect world. Even if it was, though, given multiple shared iTunes libraries in a house, and multiple remotes, and multiple speakers, they'd all have to have proper pairing & permissions to work. I have no doubt that Apple could make such things simple and obvious, but you can see how complex such a remote device would ultimately be. I'm sure they're working on it.
Of course, having WiFi would also suck up the power, so the remote would either need better battery technology, or a charging cradle. I guess in that case it would make sense to merge the remote functions with an iPod, and just tell people they have to put it in the cradle all the time to charge it when not in use? Seems inconvenient, though. Damn we need better battery technology!
Finally, for screens, I'm not a designer or creator or anything so, personally, tablets and touch screens aren't very interesting to me (except maybe in a remote/ipod/pda type device). I would just be happy with a wireless display. It wouldn't even have to be portable. It would just be awesome to be able to mount a display on the wall that is able to do one thing: receive video wirelessly. You could have an outlet installed behind it, and, voila: no visible wires! Hang it like a painting. All we'd need then is a DVD player capable of delivering WiFi video, plug the cable box into the DVD player like normal, and all the video I might want to play can be viewed on the screen, including video from our laptops (or "headless" iMac or PowerMac someday). That would be the bomb! Digital hub, indeed - one screen to receive all the video. Too bad they made AirPort Express only for iTunes audio - it would be great to just have a general audio driver to send audio over WiFi to any speakers.
Although I suppose the network would start to get pretty congested with this WiFi screen and WiFi speakers receiving all this video and audio over the air. But they shouldn't have to be on the internet, they could be a separate A/V network, the computer's A/V drivers would send data to them, but other communication would go out on the regular LAN/WAN network...
Ah, dreams. Apple makes them possible! Or at least more fun...
