Tap Tap Tap, developer of a couple of the most popular and beautifully designed applications like Where To? (4.5 stars), Tipluator (3.5 stars) has imploded over differences in direction between it's founders. It's a theme we've seen before in iPhone developer Tapulous.
In this corporate divorce, most of the software has gone to Sophia Teutschler and will go under her Sophiestication Software name. This includes Tipulator, Groceries (unreleased), and Where Am I? (unreleased). The one odd ball, Where To? will be sold off by Tap Tap Tap and has already been removed from the App Store.
Tap Tap Tap has a few other projects in the works, though no details have been released.
For more info on this, see the latest Tap Tap Tap blog post here.