Brichter will be joining the Twitter team, and he'll be working with them to eventually provide a Twitter for iPad app as well. More information on the deal (as well as that price change) is coming soon, though Williams didn't say when the iPad app might be released.
So, wow. A little shakeup in one of the biggest app genres on the iPhone. There's no word yet on what will happen to the Mac version of Tweetie, or any other plans Brichter might have for the App Store. Here's a statement from him. Stay tuned for more insight and analysis soon.