Aphelios: Some weapon effects have been adjusted to reduce his overall power level.
Gwen: Her Q ability's cooldown has been increased at early levels, and her ultimate's attack speed bonus has been reduced.
Hecarim: His E ability's damage has been reduced at earlier levels.
Ivern: His W ability's mana cost has been increased.
Kha'Zix: His Q ability's damage has been increased against monsters and his ultimate's invisibility duration has been increased.
Lissandra: Her Q ability's cooldown has been reduced, and her ultimate's damage has been increased.
Mordekaiser: His W ability's shield value has been reduced.
Trundle: His Q ability's bonus damage against champions has been increased.
Zed: His Q ability's damage has been increased, and his ultimate's damage has been decreased.
[Item Balance Changes]
Hullbreaker: Its bonus damage against turrets has been reduced, but its armor and magic resist bonuses have been increased.
Liandry's Anguish: Its ability haste bonus has been increased, but its magic penetration bonus has been reduced.
There are also various bug fixes and quality-of-life improvements included in the patch.
[Meta]
The current meta on the North American server features a wide variety of champions in each role, with no one particular champion dominating the scene. However, some champions are more popular than others, such as Gwen and Viego in the top lane, Hecarim and Udyr in the jungle, Viktor and Syndra in the mid lane, Jinx and Kai'Sa in the bot lane, and Thresh and Leona as support.
In terms of playstyle, the meta favors aggressive early game plays and objective control, with teams often focusing on securing early dragon and rift herald spawns. Split pushing and skirmishing are also common strategies, as they allow teams to gain map pressure and pick off enemy champions.
As always, the meta can shift quickly with each patch and player preferences, so it's important to stay up-to-date on the latest changes and strategies.