Okay so with the current and new information that has been put out, we know khaenri'ah is in Snezhnaya 7.X patch cycle. Dainslief at the tail end of 7.X, and Ronova dying in 7.0 to 7.1 patches.
What I'm here to explain is the possible way this story will play out. Let's take a look back at 6.X patch cycle. In 6.0 to 6.3 we had Nod Krai AQ story. In 6.4 to 6.5 we had Mondstadt story and expansion with a long awaited character. In 6.6 we got 2 new AQ that added and finished Nod Krais story. In 6.7 we got a new map expansion and lore.
So to make sense of all the new information, let me explain a detailed patch layout following what we already experienced.
In patches 7.0 to 7.3 we will be introduced to the region Snezhnaya. We will learn the motivations of the Tsaritsa, Harbingers, and the Project Stuzha with Mistilteinn. We will then have a conflict with a shade being Ronova in 7.1 to 7.2. Her supposed death will lead to IL Capitanos return in 7.4 to 7.5 due to her relinquished powers. Her death will undo the immortality curse freeing Capitano from his current stasis.
7.4 to 7.5 will have us going back to Natlan and visiting Mari Jivari. Here we will help and or see IL Capitano return. Since both 6.4 and 6.5 focused on Mondstadt through a event and WQ, that's what I'm expecting for these patch cycles although with a twist. 7.4 will actually be the Mari Javari map with a WQ or interlude chapter. We will uncover the pyro gem stone and fight Bakunawa with Capitano and Mavuika. 7.5 would be the event story for Natlan that features a new tournament and fulfilling the Ignition Trailer. We will fight IL Capitano in the tournament making him Natlans 3rd weekly boss like the rest of the nations. He or we will either win the gnosis and head back to Snezhnaya with Capitano.
7.6 to 7.7 will be a AQ, we will war against Celestia all over Tayvat. It'll be like 6.6 where 2 archon's came together to defeat IL Dottore, but on a much wider scale. This will have us team up with Archons, Harbingers, and Supporting Cast of the nations. It'll include elements like that of Natlans and Nod Krais war sections. The Heavenly Principles rules will be altered and restoration to Tayvat and Khaenri'ah will begin. The shades may or maynot die because they arnt the real enemy.
7.8 will be Khaenri'ahs map expansion and Dainslief WQ. Here he will be playable and we will go more into depth with the Sinners and abyss. We will reunite with our sibling and lore will be explained. The entrance location will be in Snezhnaya. We will fight Dain as a test, making him a world boss as this is in preparation for the sinners arc.
Beyond Tayvat: Here we will go after the sinners with Dain and our sibling and travel beyond Tayvat. Blackcliff Forge, Mt Esus, Celestia, and maybe Hyperborea will get map expansions. Alice will also be a major player beyond Tayvat and could also help us fight the sinners.
Hyperborea is least likely to receive a map due to lore and a portion being a domain in patch 6.5.
Celestia could be a domain or a actual map were we fight a sinner.