I received 4.4.2 update yesterday for Nexus 5 bought from Indian play store on launch day. Some bugs are fixed, free RAM is increased by around 100MB and notification volume is louder now. But I am definitely not satisfied with camera software. Camera hardware is really good but software is still terrible. Now they have decreased the lag and capture is almost instant. But still camera doesn't focuses on its own. Earlier, it used to take its own time to focus and then capture. Things are terrible in this department. Camera lag was for a good reason in 4.4. Camera app launch time is much improved though.