Today a patch went live that addressed a major exploit (being able to guarantee certain very high value things from RNG drops that could be sold on AH) and one which has caused a bit of an uproar - removal of leadership from Gateway, the web interface.
The Gateway change has upset people because it was one of the few legitimate ways to earn Astral Diamonds without buying Zen and exchanging them. The devs say that bots were destroying the economy by running leadership farms, which is fair enough - but this change will drastically affect legitimate players, while bots can be adjusted to do these things in game rather than on gateway.