API change summaries/Historical

Early API changes were communicated on the official World of Warcraft forums. interacted with addon developers such as who consolidated many changes into summary posts on the forums.
This activity peaked between Patches 1.9.0 and 2.0.1 as cornerstones of the Lua API were built, such as (). The earlier API was limited to XML elements like . Iriel continued summarizing the API changes until at least 3.0.2, but slouken's participation in the forums became more sporadic prior to his departure from Blizzard Entertainment in 2011.
 Although the original forums have been taken down, blue post tracking websites like BlueTracker archived substantial parts of these threads because slouken was a Blizzard employee. Some of Iriel's posts were also transcribed to early forms of Wowpedia. These are retained for historical purposes because they document this early development of the WoW API.
Major Patch 	Wowpedia Transcriptions	Blue Tracker Archives
Wrath of the Lich King	Wrath of the Lich King 	Wrath of the Lich King
Patch 3.0.2 	
*Patch 3.0.2/API changes	
*Upcoming 3.0 Changes - Concise List
Burning Crusade 	Burning Crusade 	Burning Crusade
Patch 2.4.0 	
*Patch 2.4.0/API changes	
*Upcoming 2.4 Changes - Concise List
Patch 2.3.0 	
*Patch 2.3.0/API changes	
*Upcoming 2.3 Changes - Concise List
Patch 2.2.0 	
*Patch 2.2.0/API changes	
*ACTUAL API Changes 2.1.3 to 2.2.0
Patch 2.1.0 	
*Patch 2.1.0/API changes	
Patch 2.0.1 	
*Patch 2.0.1/API changes	
*2.0 Changes - Concise List (New)
*Expansion Changes - Concise List
Vanilla 	Vanilla 	Vanilla
Patch 1.12.0 	
*1.12.0 consolidated changes (Iriel)
*1.12.0 API changes (Iriel)
*1.12.0 Global API changes at release	
*Upcoming 1.12 changes - Concise List
Patch 1.11.0 	
*1.11.0 consolidated changes (Iriel)
*1.11.0 API changes (Iriel)
*1.11.0 misc changes (Various)	
*Upcoming 1.11 Changes - (Placeholder)
Patch 1.10.0 	
*1.10.0 API changes (Iriel)
*1.10.0 consolidated changes (Iriel)
*1.10.1 changes (Iriel)
*1.10.2 changes (Iriel)	
*Upcoming 1.10 Changes - Concise List
Patch 1.9.0 	 	
*Upcoming 1.9 Changes - Concise List
*Detailed API Changes 1.8.1 -> 0.9.0 (Dec 4) (sic.)
Patch 1.8.0 	 	
*Slouken: Nasty memory leak in FCF_OnUpdate
Patch 1.7.0 	 	
*Upcoming 1.7 Changes - Concise List
Patch 1.6.0 	 	
*Actual UI Code Changes in 1.6
Patch 1.5.0 	 	
*Upcoming 1.5 Changes - Concise List
Patch 1.4.0 	
*Patch 1.4.0/API changes	
Patch 1.3.0 	
*Patch 1.3.0/API changes	
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