Official patch notes
Riot's official notes are the source of truth for every change, including system and gameplay updates.
Changes detected in game data
Compared Data Dragon 16.14.1 with 16.13.1. Detection covers champion base stats, ability cooldowns/costs/ranges and item costs/stats. Damage values and ratios are not reliably exposed by Data Dragon — read the official notes for those.
Data Dragon is updated manually by Riot and can trail the live patch for a short time.
Champions
Buffs 0Nerfs 0Adjustments 0No measurable changes detected for this category.
Items
Buffs 0Nerfs 1Adjustments 1- Total cost25002600
- Ability Power7060
- Health300350
Systems
Data unavailable
System changes are not exposed by any official machine-readable source. See the official patch notes.