Today Apple released the 2.2.1 Software Update for iPhone, iPhone 3G, and iPod Touch. No new features, but it is supposed to improve the stability of Mobile Safari, and fix an annoying bug that caused images saved from mail to be displayed incorrectly when added to your iPhone’s camera roll.
The iPod Touch version of the software update includes the 2 fixes mentioned above, and corrects an issue with some Apple Lossless encoded audio files that were skipping during playback.
If iTunes doesn’t prompt you to install the update when you connect your iPhone or iPod Touch, simply click the “Check for Updates” button.