Got some more information from people that visited the Messe and talked to someone there that must have been AJ....

While the SD9pro usese the same interface as the sd7, internally they are two very very different instruments, the SD9pro has an even more advanced soundengine then both the sd7 as well as the audya... Same goes for the style engine... Both are next generation..

The SD9pro has the high end keybed of the audya and not the keys of the SD7 pro..

Launchpad works like a style with 6 scenes that loop... It gowever has 12 tracks... And a track can be audio, midi or even an MP3.. The launchpad follows chordprogression just like a normal style...