The things that I don't like from this update:
-The new KEYBOARD uses up to 3 languages at the same time, and doesn't let you change manually from one to another. That's a shame,cause I normally use 4 every day, so even if 3 is super cool and should work for most people, not for me, I would like to be able to chose the old behaviour.
I don't use Chinese at all and I can not unselected it.
-The new launcher for the camera from the lock screen makes a sound, and I couldn't find a way to avoid this.
-The new superior mode doesn't allow you to use 12MP at 4:3 (which is my favourite), only 9MP at 16:9. Also, pictures have more noise and look very blur when low light
-The apps display, when you select the "most used" order, only shows 20 apps.
-I had some bluetooth connecting issues that I didn't experience before.