Yes it has.
However. I don't think Apple has done both OS X beta and iOS beta builds on the same day in quite a while. So I would expect that IF there is a new iOS 9 beta build scheduled this week it will be either tomorrow or Thursday.
Last beta was released on Thursday, August 6th, tomorrow marks the 2nd week. So, we should see it tomorrow hopefully.
However, the later betas tend to stretch out to 3-4 week instead of 2 week IIRC the last few years.