Today's short maintenance was a server update with five fixes. There is no client update this time.
Aggressive monsters now notice you within about a second. Until today a monster that stood still could take seven or eight seconds, so you could walk right up to it before it reacted.
The Thief's Reverse-Grip Sword stance no longer lowers your melee attack. The game's own table took a quarter of it away without saying so anywhere. Its critical bonus stays.
A monster that was slowed twice goes back to exactly its own speed when the slows end. It used to stay a little too fast for a while.
Players at the edge of your sight no longer pop out and in again while they walk along it.
And a rare way the map server could lock itself up was closed.