Zeri
If you pay attention, the mid-season updates of Truth Arena often appear new characters in League of Legends.
Therefore, with Zeri being released in the upcoming version 12.2, there is a very high chance that this character will also appear in Truth Arena season 6.5.
Wukong
In addition to introducing new characters, the generals added in the mid-season update of Truth Arena also address the weaknesses that the current races and systems are facing.
And the direction that Riot can solve is to make the Academy champions themselves have the ability to coordinate well with each other and make pushing up to 4 or 6 champions more valuable.
Annie
At the present time, the Inventor system is proving extremely strong with strong attack and defense capabilities.
Therefore, Riot needs to reduce this dominance by removing Seraphine in the upcoming 6.5 season and replacing it with a suitable unit like Annie, for example.