While I can jump into the fray in saying that a 5in Maemo device would be great - really, really great. I'm not to sure about this particular design. It looks like an elongated BB Storm (v1).

For Dell, its a smart, but niche, play. Its a good one though. Can't wait to see the thread(s) here about those that purchased this, didn't care for Android and hacked Maemo for it.