As MacStories notes, an updated version of Apple’s iTunes Festival app has appeared in the App Store with an iOS 7 redesign and streaming support for next week’s iTunes Festival at SXSW (although the app does not appear ready for download just yet).
Earlier this week, John Gruber offered that Apple’s iTunes Festival app could require iOS 7.1 and suggested a correlation between the absence of both software releases. Compatibility notes, though, list iOS 7.0 is supported and some users are reporting success with downloading the app with iOS 7.0.6.
At any rate, iOS 7.1 is still expected to debut sometime this month.