The tweet of Android Senior Vice President Hiroshi Lockheimer says it all:
— Hiroshi Lockheimer (@lockheimer) December 3, 2015
It’s been more than a week now since he made the announcement but it’s normal for Android updates to be delayed even for Nexus devices. Hopefully, the up coming update will also contain bug fixes and improvements as my Nexus 5 has been screwed up by the latest Facebook app that came out last week. The new keyboard, new font, new emoji and new code is something we all look forward to.