There is a spike of fixes on April 21st, which was this past Tuesday. That is likely due to two reasons. First, patch 3.1.1 was released and many of the changes had to be done via a client side patch and by some realm maintenance. Secondly, there were not any fixes released during the weekend of April 18th, so a few days of bug-e-ness went by.
Just by looking at the graph you can tell there's about an average of 13 or so fixes per day, and that number is steadily dropping.
Hopefully this means that the bugs are going away too, and overall things are becoming more stable in-game.
The announced changes after the break!