As always, it is important to treat these iOS beta release date articles with a proverbial grain of salt. While BGR has been accurate at reporting release dates in the past, they have also missed the ball on more than two occasions. The site did accurately predict iOS 8 beta 4 releasing on July 21st.
We all know that Apple release iOS betas every two or three weeks, so this prediction makes sense based on the traditional release cycle over the years.
As always we will keep you updated with anything new.