I have noticed the changes as well, I have found a small bug that doesn’t impact me that much, but when my computer goes inactive (locks the session and turns the screen off) the screen isn’t actually turning off anymore, it just goes balck, but still is on. Not sure if this is happening to other people. I’m using an Intel Classmate PC (Marble Point) btw.
EDIT: After a reboot this seems to not be happening anymore!