The date has been available for some time. No news there.
The time that the fares will be released is the big question. For quite a while it was about 10 a.m. CT. Then it went much earlier; around 5 a.m. or 5:30 a.m. CT. But the last few times it has been closer to 10 a.m. CT, although not exactly.
My advice is to start checking as soon as you get up (and if you can get up at 5:30 a.m. CT, so much the better) and to keep checking as the morning goes on. As it gets close to 10 a.m. CT, check more often.