Hi Bolleed.
If your unit has the SDHC logo on, it WILL read SD cards. I received one of the first units out and revealed the fact to the world on YouTube: http://www.youtube.com/watch?v=jzP2Hg4eQPk
I also did a couple of follow up videos as well.
American Audio are now offering U.S. customers an upgrade for older units.
You can still only have a maximum of 999 tracks on the SD card though.
Regards,
Paul