If I go to the prepub page and sort by Ship Date or Progress, the Encyclicals that are shipping today aren't there (and, no, at the time this is written they haven't gone live yet, nor has the date been changed).
If I sort by Newest instead, the Edward Sri book that was added yesterday is no longer visible.
If I add &unlocked=yes to the first search, the Encyclicals suddenly turn up again -- but then St Patrick, which is also shipping today, disappears instead.
If I filter by Catholic all 3 books seem to turn up where they should be. (I haven't checked things further down the list, just things I knew should be at the top.)
It's also happened a couple of times today that I've tried to change the sorting order, but the page hasn't refreshed. Actually, now that I try again it happens all the time. The sorting seems completely broke.
