iOS 9 beta 2

Once Apple decides it's ready.
Typically some time after Beta 1 and before Beta 3 😁

History teaches us on average a couple weeks after the initial beta release. You're not running Beta 1 on your primary device are you?

Well, if Apple goes by their typical beta release pattern, expect beta2 around the end of the month with the public beta starting a week or two later in July. So if I was a betting person (which I do occasionaly partake) Apple historically has had 4 beta releases and 1 GM release a week before the Final Release. Based on the keynote with the mention of available in Fall (September 23 is Fall)

Beta1: June 8 (Released)

Beta2: ~June 29

Publc Beta (PB1): ~July 13

Beta3/PB2: ~August 3

Beta4/PB3: ~August 31

GM: ~September 14 with Final Release a week later(after September 23).

But since I'm posting these pretty good guesses, Apple will mix it up. 😁