The 3rd USACO of the 2015-2016 year is open from February 19-22 (It's February 18 now, and it's open for some reason, but whatever... maybe the opening time doesn't use EST). Unless someone else has already started a blog about this (in which case it'd be nice to have a link in the comments), we should discuss the problems here after it ends.
UPD: Contest is over. Discuss! UPD: Results are here