Many have speculated that this day would never come, but Apple has indeed updated Garageband with Audiobus support!
The update allows Garageband to be used as an Audiobus Ouput. Finally Apple's own app can play with all the other great apps!
What's New in Version 1.4
- Play and record music apps supported by Audiobus directly into GarageBand*
- Turn off grid snapping to get finer control over region and note editing
- Fixes an issue that resulted in feedback while connecting 3rd-party audio accessories into the headphone/microphone jack* Requires iPhone 4S, iPod touch (5th generation), iPad 2 or later. Audiobus requires a separate purchase.
Multi-track recording, as we see in other DAWs like Cubasis and BeatMaker 2, is unfortunately not available in this version. All Audiobus input apps will be recorded together to a single track in Garageband. This is a small, but important, caveat in an otherwise milestone accomplishment for Audiobus support.
This coincides with the first, and potentially only, sale on Audiobus for 50% off!