Nostalrius Begins - Quality wow vanilla realm (1.12)

Hey guys, i would like to know if the patches that are getting into the Nostalrius server are exactly the same as in retail WoW?
I heard that some stuff is already in implemented that actually should come in later patches. Is that true?
And if yes, how do we know what actually got implemented in certain patches of Nostalrius since it seems that some stuff is already in there.
Thanks

I think classes are balanced like 1.12? But things like quests and stuff match the patch numbers?

Game mechanics (thus client we use, talents, class abilities) are Patch 1.12. Content (raids, world bosses etc.) are released respectively to the timeline, currently we're at Patch 1.8.

So only "Playable content" is getting patched in, right? Stuff like class changes and mechanics etc are like patch 1.12 only content like dungeons, raids & quests (literlly playable stuff) is getting patched in?

JohnnyBlaze wrote:So only "Playable content" is getting patched in, right? Stuff like class changes and mechanics etc are like patch 1.12 only content like dungeons, raids & quests (literlly playable stuff) is getting patched in?

Yup