Tons of 3rd Party websites have carried the same list of programs and dates since last night.
Here's one: http://blog.zap2it.com/frominsidethebox/2014/03/nbc-finales-2014-calendar-for-community-the-voice-hannibal-and-more.html
Only one of the finales is currently listed in APT, and there's a gaping hole in Thursday night in May Sweeps remaining. I guess we'll all wait to find out what NBC will throw in there.
RatingBook.com clients now have finale estimates in the Specials Selling Book.