Well did the whole world know except me about being able to upgrade the beta software through settings/general/software update?
I started with the third beta on a 5th gen iPod touch. Backed up my iPhone and then restored it to the iPod. Then added the beta OS. When beta 6 came out today i was in two minds as whether to upgrade or maybe wait for beta 7 as the whole rebuilding the iPod and upgrading the OS is a bit of a chore if you are doing it repeatedly, and especially as i have been running the beta on my iPad and so had to wrangle two devices.
But, reading iMore i find i can just go settings/general/software update and get the next beat. Neat