Lollipop which has been out for about a month and is getting it’s first bug fixing patch today.
I’ve been using L for the past few weeks and have noticed a number of little things which I really hope will be fixed in the upcoming release. Issues I’ve noticed include not being able to connect to the camera and Chrome has become fairly unstable, particularly with multiple tabs open.
Probably the most annoying thing for me however would be the lack of a silent mode. This has been replaced by “No interruption mode” which doesn’t really work all that well. Just doing a quick search on this finds a plethora of people with the same complaint, so hopefully in the near future we’ll see this addressed.
If you don’t want to wait for the OTA release then you can find the factory images here.
Keep in mind that only the Nexus 7, Nexus 9 and Nexus 10 have the 5.0.1 images available.