3.7.0 Gold is the "released" version, nothing more to it than that BUT the templates may be a slightly different story. If the skin was written for pre 3.7.0 released, like the beta versions, the only problem you might run into are the forms that need to be modified, not a really big deal but a reality.
If the skin you want to use has already been upgraded to 3.7.0, you should not have any problems with it.