I imagine that they will be rolling out with acceptances, and rejections, with each batch of letters from now on.
The initial deadline has passed, thus giving them their primary pool of applicants. Statistics probably show a very small amount of qualified applications come in after this time. Perhaps this allows them to know what they are working with, and gives them a basis to form the entering class that they want based on that.
Add to that the fact that there will be many more rejections than acceptances, it seems logical to conclude that a small amount of acceptances will accompany larger amounts of rejections in each batch of letters.
If you didn't get a letter today, take a breath and let's all do some Yoga or something to de-stress, lol! Ask yourself, on what basis do you establish that each batch of letters has to be a set of rejections versus a set of acceptances, and not a mixture?