Guitarstorage.com has come out with a new line of session guitar racks which hold up to 7 guitars side by side. You can purchase them in Red Oak or Walnut.

There are 2 types, the Session delux 5 guitar rack which is 41" long x 38" high x 24" deep. this will cost you around $429 or $369
The other one is the session deluxe 7 guitar rack which is 50" long x 38" x 24" that will run at around $449 or $389