Hmm, the only options it's giving me are developer beta or no beta. I guess if what you say is true, then it's no biggie. But I would like to get on the public beta setup as I am not a developer.At this point the builds will be exactly the same, but the public builds will be just a couple of days later. But yes, you can make the change in the settings app->general->software update. Just select the public beta channel instead.
It won’t change your current install, but will then wait to prompt you for an install until the next public release.