Not that I personally know about. Many of the aquarist magazines have regular articles on reefkeeping or some aspect of reefkeeping, but no magazine that I know of is dedicated to reefkeeping.
There is a new magazine in the UK called Marine World and it is purely for marine keeping with the emphasis on reefs. It can be basic at times but alot of interesting pics and info starting to appear now that its taken on. It only started this year and is bi-monthly at present, easy to get back issues too. I'm sure it has a web site