This is what I read: "Entries are open from 10:00 am Pacific Daylight Savings Time on April 29th, 2016, to 10:00 am Pacific Standard Time on August 29th, 2016" It would be great if that could be clarified.
"Valve will announce the winners on http://blog.dota2.com/ no later than September 1st, 2016." They changed the post if anyone was wondering. Probably due to two_larsens' question in the dev dota2 forum.