Update 25.17 has brought a multitude of changes: the return of the standard Summoner's Rift map, the return of the "Nightmare Bots" mode, a rework of Xin Zhao, a new battle pass, improvements to game information tracking mechanics, and numerous bug fixes.

New Battle Pass and Rewards
With the start of the third season in League of Legends, a new battle pass has arrived! Among its rewards are Arcana Lulu skins, Arcana Jhin, Prestige Jarvan IV Vision of the Fallen, emotes, icons, and much more. For the first time, the battle pass reflects a change from 50 to 48 levels, while the experience per level remains the same, making it slightly quicker to complete. You can learn more about the battle pass rewards by following this link.

Start of the Third Ranked Season
The third ranked season kicks off on August 27 at 12:00 local time. LP and progress towards the next rank will not be reset, only the quest for obtaining the victorious skin (15 wins in ranked matches) will be updated. Ranked games will be unavailable for approximately 12 hours, and rewards for the end of the second season will appear a few days after the start of the third.

Item Changes
Axiom Arc
Total cost: 3000 gold ⇒ 2750 gold.
Hextech Rocketbelt
Ability power: 115 ⇒ 125.
Total cost: 2800 gold ⇒ 2750 gold.
Recipe: Fiendish Codex + Fiendish Codex + Blasting Wand + 250 gold ⇒ Fiendish Codex + Fiendish Codex + Blasting Wand + 200 gold.

Ravenous Hydra
Attack power: 60 ⇒ 55.
Total cost: 3200 gold ⇒ 2850 gold.
Recipe: Tiamat + Pickaxe + 663 gold ⇒ Tiamat + Pickaxe + 313 gold.
Return of Mythic Skins
The return of Sanctuary items: mythic variants and Battle Bunny Admiral Miss Fortune. Archived "Nightmare Bots" skins are now available until the end of update 25.20. Special chromas will be available in the mythic shop for 35 mythic essence.

Bug Fixes and Quality of Life Enhancements
Custom Game Mode: Fixed the "Play Again" button, voice chat, and mode switching without a new lobby.
New sound effects for swapping pick/role order.
Updated tower visual effects.
Honor level-up simplified.
Numerous bugs affecting abilities, client, and store have been fixed.

In addition to all the changes in update 25.17, new skins will be added to the game — Prestige Jarvan IV Vision of the Fallen, Tryndamere Vision of the Fallen, Garen Vision of the Fallen, Spirit Blossom Alistar, Arcana Lulu, and Arcana Jhin.