Looks like Dell is jumping into the same market as the Asus eee PC with an ultra mini notebook PC.
I already have the Asus eee PC and the ultra sweet Asus 900 that was featured in Joanna Sterns' Laptop Magazine story.
The neat thing about the eee PC/UMPC type devices is size, weight and ease of use. The Asus I have is Linux, but you can also put Windows on them. But, with all the apps one needs to do basic work, who wants Windows. Open Office and Google Docs does all I need for productivity, Thunderbird for email and Firefox for a browser.
The way I look at it, why turn a great device into a paperweight by adding Windows.