Same... hoping they release all the July reservations on June 1st.
So, this morning, I see time slots available for July 31 - 60 days out from today, but still nothing for the rest of July.
I called in to Disney Dining and spoke with a a very nice CM about it. She looked and could see all the reservations that have been made at Jiko and confirmed that no-one has any reservations in July even though the restaurant is scheduled to be open. Putting me on hold, she connected to "Business Integration" (which I assume is some kind of IT department) and was told there is a glitch with Jiko and a couple other restaurants in July that is preventing the time slots from opening up. They are close to fixing it and when they do the time slots will just show up - could be at any time of the day, not the normal 6am dump. So just need to keep checking.