This update from Apple will improve the functionality of this app. No new features are included.

Bug fixes.

Thanks to your feedback, our Smart Tabs just got even smarter! We've added fingering notations to each tab. Now you not only know which frets and strings to play on, but which fingers to use as well. Rock on! Keep the feedback coming.

Fixed Twitter Unlock for Mystery Pack. Sorry about that!
Fixed playback alignment of red line on tons of licks. Enjoy!