With today's server save, Tibia have released a new client version. Among others, they changed the following:
Increased the speed and the density of all monsters living in the secret library.
The library monsters now yield noticably more XP and also drop slightly more loot.
The health points of the Skeleton Elite Warrior were raised.
Removed several unreachable points of interests from the Cyclopedia Map.
Added specific area checks for deepling death counts ("Liquid Black" world change) to exclude deepling deaths caused by deathlings from the count.