Back on topic...i would like it if the 23rd were true; however, the hard evidence just isn't there. I don't know why Apple just can't release the date. The whole secrecy thing gets annoying.
My current theory is that they forgot.
Apple Minion: "Hey Steve, people are asking when the 3G iPads will be shipping."
Steve: "Oh s**t, we never announced that date, did we? I totally forgot. I've been too distracted playing some of these sweet iPad games."