I'm not going to rule it out, but I'm not going to worry about, either. This is going to be very a purpose-specific build - it's going to live on my stereo rack and only be used for music fetching/playback. Maybe I'd do some light browsing with it, too, but I still like the form factor of a desktop for most applications, so I don't know what else W8 might bring to the table, in this case.
The pricing on the Dell, BTW, is really, really reasonable - ~$300 for an 22" IPS touchscreen? Yah.