Take it easy, will you? He's not technically asking how to get the software, he only asked if it was possible for him to install beta 5 through iTunes then OTA to beta 6. Even though thus far past releases have suggested that it's possible, I'm sure in this particular instance it might not be so there's nothing wrong with asking someone else who might have done so.
I know he's not a developer, but give the guy a break. He obviously likes tinkering with new things and I'm sure he loves Apple stuff just like the rest of us. There might be a reason why the UDID loophole exists, you know. It might let the fans who want to really experience the wonderful things in iOS 7 do so early while keeping the masses hesitant and thus protecting Apple from bad press and leaks.