Not received any OTA update yet.
Disappointed with Google this time. If this is their marketing strategy to get people involved and excited then it will fall flat.
Last year I was confused to buy iPad Mini or N7 and now I feel ipad would have been the correct choice. I am not a person who believes and likes to do thousand different things on my android. I am a simple user and I use it on a daily basis to watch videos, listen to music, browse the internet, play games etc. After doing these activities for 4-5 months I saw the device has become really slow and is not as snappy as before. I did a factory reset twice and re-installed only few apps each time to check if some apps are problematic. Still the device is slow. On top of that these OTA updates are nowhere to be seen. Also - I have heard that translucent status bar feature is not readily available in 4.4 update for Nexus 7. Overall, Google is not going to support any updates for nexus devices post 18 months of the release. If N7 2012 was realeased in July 2012 then kitkat 4.4 will be the last update for my N7.
Should have spent more money and got iPad Mini