Since this was the topic, here, it's reality now since a couple of hours:
http://www.apple.com/macmini/

Costs $499 or €489.

Just you'd expect from Apple: very stylish and cool. No big room for upgrading and no power horse, but that's not what it's about. The website says it has one very silent fan.

So my personal summary ... you can build a much more powerful machine out of a Peg board. But in terms of sex appeal the Peggy just plain loses. For most ordinary consumers who don't need the power of high-end computers anyway, this is a great thing.