I've never heard of it. I do like Family Fun magazine, which is produced by Disney. It occasionally has articles about WDW, but not all the time.
If you're looking for a good guidebook for kids, I'd recommend Birnbaum's Disney World For Kids by Kids. My kids love it. It has pictures and descriptions of all the attractions, with ratings by kids of various ages. It's written at a fairly low reading level (3rd grade, maybe) but my older kids still enjoy reading it. Be sure to get a 2003 if you get one.
I'll be watching this thread to see if anyone else knows about the book/magazine you're looking for.