Did 4.2.2 improved the Nexus 4's screen calibration?

One of my main complaints with the Nexus 4 has been the terrible screen calibration. Colors are extremely washed out compared to the iPhone 5 or One X. I didn't even have to compare it to another phone to notice how off the screen was. I don't know if it's just me however but after the 4.2.2 update the screen looks ever so slightly better. Colors seem a tad more saturated and improved. Has anyone noticed this or am I merely experiencing a placebo effect?