you can age guezes and barleywines 10 to 20 years, really.

conditioned bottles can keep longer than regular bottles.

If the beer is getting a lot of it's flavor and aroma profile from hops - 3 months max is the shelf life if not refrigerated. If you have big hops beers like India Pale Ales and Double India Pale Ales (like Pliny the Elder, Alpine Expo, Double Trouble, Hopslam, etc), they should be consumed soon after bottling as the hops fade fast.