Awesome, that'll give ya some good traffic I'm sure. I've had that happen a few times and saw some nice traffic coming in and people emailed me telling me they saw the site in the magazines/papers... so you can definitely expect to gain some new readers from it.
I actually wish they would've emailed me and let me know in advance like they're doing with you. I normally have to find out about it once the magazine is already out. It'd be much nicer to be able to let people know about it in advance so they can pick up a copy.