AKAI posted a picture yesterday teasing an upcoming iMPC version called iMPC Pro.
— Akai Professional (@Akai_Pro) April 18, 2014
It’s not yet clear whether iMPC Pro will be a regular update to the iMPC app, an IAP or a standalone new app. It does seem like iMPC Pro will give more advanced functionality in the song building and sample chopping department (with time stretching functionalities)
As Retronyms is still involved in the development, we’ll probably not see Audiobus support coming any time soon unfortunately.