https://www.leagueoflegends.com/en-us/news/dev/dev-hextech-chests-getting-champs-more/

https://youtu.be/sAVa467pHl8

TL;DR:

• 10 Hextech Chests and Keys per Act—8 on the free Pass, 2 additional with Honor
• Hextech Chests will be replacing the free Battle Pass skin
• Consolidating all Key Fragments into Keys, rounding up leftover fragments
• The Blue Essence cost of all champions will be reduced by 50%
• Delaying Sahn Uzal Mordekaiser Exalted skin while we make improvements
• Increasing the quality of Battle Pass skins going forward
• Adding 25 Mythic Essence to the paid Battle Pass to replace one paid pass skin
• Clash is going back to a monthly cadence
• Your Shop is coming back in Patch 25.06
• The Blue Essence Emporium will return in Patch 25.07