A recent leak on the Genshin_Impact_Leaks subreddit has revealed that we might get Yaoyao and the new region Chasm in update 2.4 which will drop at the start of 2022.
Yaoyao is one of the most anticipated characters in Genshin Impact and her absence from the last couple of updates generated even more hype around this Dendro character.
There is a total of seven different elements in Genshin Impact, all of which are attached to the game's character, except one. We are yet to see a playable Dendro element user in the world of Teyvat.
According to an interesting leak on the Genshin_Impact_Leaks subreddit, we might finally get our first Dendro character - Yaoyao. However, the leak states that she will arrive alongside a new region Chasm with update 2.4. This means that we will have to wait till around mid-January to see if these leaks are true.
So far the only elemental reaction that includes Dendro is Burning. The grass is considered a Dendro object and will spread the burn effect around the area. The fact that this element only interacts with Pyro might be one of the reasons why we haven't seen a Dendro character yet. It would surely require a major change to the elemental reaction fighting mechanics of the game.
However, back in November a couple of leaks hinted that there is already at least one Dendro character in the making. According to a credible Genshin Impact leaker called Zeniet , Yaoyao was already in development back then.
Looking at her model it's safe to say that she will be a catalyst weapon user which generally means that she will be able to apply Dendro elements through her normal attacks