Patch 12.16 in LoL. Which League of Legends heroes will be buffed, and which will be nerfed?

Who did the developers decide to change in the upcoming update 12.16 to League of Legends?
League of Legends updates are released at regular intervals of two weeks. In each patch, the devs try to balance the heroes in such a way that none of them are too strong or too weak.
In addition, the changes have an impact on the gameplay experience, which is used in the upcoming Worlds championship. What will be changed by the devs with the season ending soon?
Who will get the changes?
Champions’ buffs
- Tristana
- Zoe
- Irelia
- Caitlyn
- Kai’Sa
- Jayce
- Vladimir
- Malphite
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Champions’ nerfs
- Zeri
- Yuumi
- Draven
- Poppy
Champions’ adjustments
- Diana
Items’ changes
- Evenshround
According to the schedule Riot made available at the beginning of the season, the update will be available on live servers on August 24. The developers will most likely soon publish the complete list of fixes that will be included in patch 12.16.