The ability to install upgrades over USB and Ethernet using the upload-then-self-flash method is something that the empeg guys have been planning on implementing natively for a while now.

The HSX-109 already does this quite well, it can even go out and grab the latest version from the web via broadband ethernet link.

Dunno when we'll see it happen on the car player, but the fact that it works on the HSX is promising.