Yes, the June Cumulative for Win 10 was released after the other cumulatives were released for June. They were deployed on June 12th or 13th.
I got mine on July 3rd, much later than June 27th, but that was due to it not being available on Windows Update. It was possible to get it sooner by going to Microsoft's Update Catalog on or after June 27th, but that fact is not widely known.