I was just passing through the events page and noticed dates for the 2018 Championships (of course), but also today all of the MAR district event dates are listed as well as the Bayou Regional date. It seems like they released dates in chunks later in the year in the past.
MAR confirmed their 2018 event dates on their Facebook page last month: https://www.facebook.com/firstmidatl/posts/807607702731021