No big issues for most of us, other than more buffer space so that the drives don't have to spin as often (safer for the drives that way, in the car).

But for perhaps 20-50 of us, the extra RAM will allow us to have the empeg doing much more than just play music to itself..

Eg. alternative playlist browsers, fancier web applets, on-the-fly database updates (no more 10 minute rebuilds, yay!). Etc.

Cheers