I can understand the original PA500, released in 2008 using the older SD cards, with a 2GB limit, but if they are still manufacturing PA500's in 2012 should they not update the SD storage to accompany the newer, modern SDHC cards with higher capacity?

Am I correct, Korg, updated the original PA50 to the PA50SD to allow for the more modern SDHC cards? IMO, the PA500 should follow, and get with the times.