I am extremely anxious, but I think E.d.L.d candidates will find out about interviews by February 4th. I've looked through all forums from 2016 to present and in the past 3 years applicants were notified on the first Thursday and Friday of February. However, this year February 1st is on a Friday. My prediction is that they will send out invites on Thursday January 31st and Friday February 1, 2019 or the latest Monday February 4th.
Apparently in the past they have sent invitations out over a course of 2 days but some candidates get late interviews but it is not so common. In the past forums candidates have mentioned that they received their rejection letters in March. I also applied for a masters but I already have one.