Note that many changes cannot be easily datamined, such as functionality changes, bugfixes, or mode-specific balance modifiers. Sometimes changes can also take a couple days to show up, even if Riot has already announced them.

see previous changes here

changes since then:

Smite:

• can once again be cast on minions and pets (will now deal the same 40 constant damage to pets that is dealt to champions now after the previous changes)
• other changes from before are still present

Zed:

• W cooldown:  20s-14s --> 20s-17s

Ziggs:

• Q hitbox adjusted:
  • radius to detect a unit (center range):  150 --> 180
  • radius to damage units after one is detected (center range):  240 (unchanged)