Last night I installed the new 4.5.0.52 OS. I noticed that the screen and all the icons and everything look a lot smoother and more crisp. Did they do something with the screen with the 4.5 OS because it looks AWESOME?
The new OS is awesome, no problems yet and from what I have read there hasn't been to many problems with the new beta.....
Well, unless they stole your device while you were sleeping, I doubt they did anything to your screen. It's possible they did some graphical improvements to the software though...