Release patch
patch 1.1.1
-Karazhan
-Gruul’s Lair
-Magtheridon’s Lair
-50 starting zone quest
-Season 1 start.
-2 Obsical courses
1 Week later
patch 1.1.2
-25-50 more starting zone quest
1-2 Weeks later
patch 1.2.1
-1 new Obstical course
-Zul’Aman
-Zul’Gurub
1-2 Weeks later
patch 1.3.1
-1 new Obstical course
-The eye
-Serpentshrine cavern
-Outlands available
-3 world bosses
-Season 1 ends, prices reduced
-50-100 outlands quest
-2-4 Weeks later
patch 1.4.1
-Season 2 starts
-Onyxia’s Lair
-Malygos
-Blackwing Lair
-The Obsidian Sanctum
-50-100 More outlands quest
4-6 Weeks later
patch 1.5.1
-Black temple
-Mount Hyjal
-Season 2 ends prices reduced
-25-50 more outlands quest
4 Weeks later
patch 2.0.1
-Season 3 starts, season 1 can be bought with honor and badges.
-Blood elf starting zone release
-Isle of Quel'Danas release
-50-100 new quest to those zones
4-5 Weeks later
patch 2.3.1
-Season 3 ends
-Season 4 starts will high costing arena points
-Molten Core
-Ruins of Ahn'Qiraj
-Temple of Ahn'Qiraj
-Some Azeroth zones released
-Alot of new quest to all zone besides the starting zones
-Ashbringer will have a storyline and a 5man instance for it with a long quest chain to uncorrupt it
3 Weeks later
patch 2.4.0
-Some bosses have new heroic modes ( New items )
-New badge gear
-Alot of new quest to all zones none to starting area
-1 new obstical course
-New Azeroth zones released
Between those patches will receive small updates like 5man instances release and item updates. Also new quest will be added weekly. New patches always role out on a tuesday. The times are not exact but will be no longer than the time shown. Other zone will be added in the small time. Bigger patches might also be between some ( Zone changes, new pets, new mounts, new zones ) We will have updated pages for each patch going into details about it and what the release date might be. Weekly bug updates will also be on tuesdays.
You can report bugs on this following fourm post here. Please remember to make an account before doings so.