Want!
I have one of their 2nd gen devices (the base SqueezeBox; their 1st gen was the SliMP3, and there has been one substantial display upgrade to the SqueezeBox that I would call "gen 2.5") and have been quite happy with it.
And their
software is freely downloadable for everyone, even if you don't have their hardware -- it's open source, in Perl, and can publish mp3 streams so you can use your favorite player.
This addresses my main concern (802.11g wireless) while adding all sorts of yumminess (native FLAC support, higher res / greyscale screen). Want want want!