Hmmm that wasn't the case for me. I got up at 5:59 ET at the 60 day mark to book our first park day of Aug. 25. Nothing was available. Right at 6 a.m., Ogas, Craftsman, Cafe Orleans, and Trattoria all popped up. The latter three are still readily available to this day, but Ogas were all gone by 8 or 9 a.m. ET. So if I had waited till 10 a.m. ET I wouldn't have been able to get one.
Now I will say, that DTD, BB, Napa Rose, etc. all seem to be popping up (or not popping up) at completely random intervals, not at the 60 day mark, so who knows on those.