Some of the magazines offer content that you can subscribe to on their web sites. In that case you can whip up a recipe for calibre and sync it up to your Reader. Don't have a Sony Reader? That's ok, no one is perfect. Just work with Kovid to write up a driver for calibre and wala---instant magazine goodness.
I would like to see color e-ink magazines as well, but i know that's not a reality for quite a while.