I would like to see WinCE on the IO. I disagree on the Linux, the apps are not there and easy to use by the non-linux user.
On a side note, I talked to LitePC.com developer and they have an embedded version of windows for the IO but it costs $3000 (this pays for there development time, you know even though they developed it already the want their moneys worth) and requires an Embedded windows listens per use. Basically they will develop an embedded windows for any hardware platform for a fee of $3000. If there are enough out there that would pitch in to purchase it then I am willing. I was trying to talk them into selling it them selves but they think they would not make enough, plus they say they have to sell the platform listens.
Check it out at http://www.litepc.com/eos.html
If enough of us let them know we are interested in it then they my give in. Email firstname.lastname@example.org