This mail just popped up on jack-devel:
Hello, I have news of JACK2 in android world!
Recently, Samsung released professional audio sdk on android platform which based on JACK2. It is a part of latest Samsung Mobile SDK: http://developer.samsung.com/samsung-mobile-sdk#professional-audio
Source code of JACK2 was retrieved from Samsung's Open Source Release Center(OSRC) at http://opensource.samsung.com/. You can find current repository & more information at below link: https://github.com/KimJeongYeon/jack2_android
Additionally, SAMSUNG DEVELOPER CONFERENCE(October 28-29, 2013) will be held in San Francisco that one of sessions prepared to introduced professional audio on Samsung's android mobile products: http://www.samsungdevcon.com/
Session : "Leveraging the Latest Features in Professional Audio Framework in Your App"
Message says it all I guess. Apparently Samsung has developed a way to do pro audio on Android based on JACK Audio Connection Kit! Can't wait to get my hands on this, stoked.