The Patch 2.3 PTR Notes are up!

Among some of the new changes that aren't central to the patch are:

- Expertise: We have added a new stat and associated rating called
expertise and expertise rating. Expertise rating converts to
expertise at the same rate that weapon skill rating formerly
converted at. Each point of expertise reduces the chance for your
attacks to be dodged or parried by 0.25%.
- Dwarf: Gun Specialization now increases chance to critically hit
with Guns by 1% rather than increasing weapon skill.
- Troll: Bow and Thrown Specialization now increases chance to
critically hit with those weapons by 1% rather than increasing weapon
skill.
- Starshards (Night Elf) is no longer channeled, costs 0 mana, is now a
Magic effect, lasts 15 seconds, causes damage every 3 seconds and has
a 30 second cooldown.
- Hellfire Citadel: Magtheridon's Lair
Mind Exhaustion is not applied until Magtheridon is successfully banished.
- Whirlwind: This ability now strikes with both weapons when a Warrior
is dual-wielding.
- A new world drop recipe for an Adamantite Weapon Chain has been
added. This new weapon chain both reduces disarm duration and
increases parry rating.
- Greatly increased the radius of the Drums of Battle, Drums of
Restoration, Drums of Speed, and Drums of War.
- Removed the casting time from the Drums of Battle, Drums of
Restoration, Drums of Speed, and Drums of War.
- Slightly increased the radius of Drums of Panic.
- Reduced the casting time of Drums of Panic and added a global
cooldown equal to the casting time.
- Cooldown removed from Noggenfogger Elixirs. The shrink effect will
no longer stack with other shrink effects.
- Low Level Cloth Items: All agility and strength on low-level cloth
items has been replaced with other stats, usually bonus spell damage,
but also sometimes other stats beneficial to mana users.

Alongside these changes are a variety of changes to practically every class in the game, a total revision of the pre-60 leveling process, which includes the change of almost all elite quests outside dungeons to non-elite and the halving of necessary experience per level, and the introduction of Zul'Aman and Guild Banks. Quite a big patch indeed!