There's no more waiting for Android 5.1 if you've got a Nexus 4 or either version of the 2013 Nexus 7. Google has posted the full factory images on the dev site, meaning you can flash the new version to get up to date no matter what you've done to your device's software.
Cyanogen announced today via Google+ that Cyanogen OS 12 (Lollipop) is finally available for OnePlus One users. If you want that Lollipop action right now, we've got the ZIP file. Cyanogen OS 12 features all the material design eye candy one would expect, as well as the more functional changes of Lollipop. In addition to the standard fare, there are a couple of features exclusive to Cyanogen.