Hi there - I've got a 6S Plus coming on release day. Currently running iOS 9.1 public beta on my 6 Plus. What's my best way to transfer my data? - Back up 6 Plus to iTunes - Open the 6S Plus - Set up as a new device - Enroll in public beta - download 9.1 beta - Then plug into iTunes and restore from backup? Is that right? Any better ways?