Hi Roel, it will indeed be terrific news if the Tyros2 supports audio import (WAV/MP3 files) the way the Ketron SD1 and Korg PA1Xpro/PA1X currently do.

The ability to import, sync & integrate audio drum loops, with existing 'arranger styles' will bring added dramatically live realism to auto accompaniment drum tracks not possible with midi alone. As I mentioned in an earlier posting, I recently discovered the following WAV format audio loops, which I believe raises the sound quality & live realism of an arranger keyboard's auto accompaniment rhythm section (that is if your arr keyboard supports audio import + sync & integration with styles) to a dramatically higher level.

Here are the impressive audio loop disks I recommend for emulating acoustic jazz combos. I recommend checking out (listening) to the included audio demos. I was blown away! IMHO: No built in arranger styles even approaches the live sounding realism of these loops.
http://www.bigfishaudio.com/4DCGI/detail.html?840
http://www.bigfishaudio.com/4DCGI/detail.html?977

Scott