Summary: The color and brightness varies depending on what angle you view the screen. This screen is 30" so when I look at the corners and edges of the screen it's at a slightly different angle than center-view. This is enough to make different areas of the screen look slightly different. If I move my head so that the edge or corner is center-view then whatever is center-view looks normal while the rest of the screen looks slightly off.
Pros: I have the A03 version manufactured in November 2013. I haven't noticed any of the problems that previous versions seemed to be plagued with such as lines or backlight bleed.
Cons: The backlight is way too bright and I can't find a way to adjust it without destroying color quality. The monitor has brightness and contract adjustments, but those are primarily for color adjustment and not the actual brightness of the light. When I get my blacks and whites where they look just right, the picture looks awesome but it is so bright it hurts my eyes to look at it for long. Reducing the "brightness" setting on the monitor really messes up the colors, so ...
Summary: I haven't encountered any temporary burn in like my Lenovo X220's IPS screen.
Pros: 2560x1600, nice PPI, good port/input selection, built in calibration mode looks awesome, runs very cool, don't notice a scanline/crosshatching problem, AG coating is awesome, matte finish, no dead/stuck pixels.
Cons: When the screen is lit but all black (or mostly black), the IPS glow is noticeable but not a dealbreaker. Trying to sit at certain angles/distances can help but can still be noticeable. If there's colors on the screen it's fine.