Tweetie 2.0 for iPhone has arrived, and while it's not a free upgrade for 1.x users (it's $2.99), it is a complete rewrite that we had some details on a week or so ago. Maddox has put up a quick look at what he likes and doesn't like and I agree on most points. The UI is fairly intuitive, smooth and silky, and some things (the nearby view and new way of reloading) are awesome. I have no problem dropping the cost of a mocha on this. Hit the main site for a feature list and pictures of all the new features.