Now that it's available, I wanted to create a separate thread where those of us who have installed factory KitKat on our Nexus 4's can share our impressions and what we like/don't like. Likes VERY smooth, especially in ART runtime. transparent bars in GEL. Significant reduction in memory usage. The new lock screen sound(sound of breaking a kitkat bar). Dislikes A few bugs, but those will be worked out as developers update their apps. No transparent bars in lockscreen. They could have handled the new phone app better, tech illiterate people will upgrade and wonder why their phone button disappeared. I thought I would hate the white icons. I really, really liked the blue holo theme. But I've found that I am OK with the change. Overall, this update is not revolutionary, it is barely evolutionary, BUT it is welcome and it is noticeable. Thank you Google.