I feel like the level up animation and heal animations got reworked but I can't find it in the patch notes.
Yeah, level up animations were extremely noticeable, on not just myself from the sound indication but seeing the burst of light coming from a lane enemy makes it a lot easier than keeping track.
Come to think of it the health effects did seem stronger than normal when I played Taric.
Last hitting also seems to have a stronger indication. Sounds a lot more rewarding too. Like you did something good.
None of this was in the patch notes though, and it's not the first time they played sneaky devils and threw in new fancy effects without mention.
Edit: Also, 1.8 AP ratio + 500/690/865 on Heimer's ult rockets if they all hit a single target. OP.