http://www.androidpolice.com/2015/10/05/android-6-0-factory-images-are-live-for-the-nexus-5-6-7-9-and-player/
Android 6.0 Factory Images have gone live for the Nexus 5, 6, 7, 9, and Nexus Player
http://www.androidpolice.com/2015/04/02/android-5-1-1-spotted-in-sdk-manager-suggests-new-lollipop-update-is-right-around-the-corner/
looks like Android 5.1.1 is just around the corner
just a few fixes, not the memory leak
http://www.androidpolice.com/2015/03/25/changelog-posted-for-android-5-1-0_r1-lmy47d-to-5-1-0_r3-lmy47i-mostly-small-fixes-for-sim-cards/
It was mentioned that this was the update where they were to be implementing the fixes for memory and WiFi/Bluetooth dropping out, as well as a number of other things they left out in the initial release of 5.0
http://www.androidpolice.com/2015/03/09/google-officially-announces-android-5-1-rollout-starts-today-dual-sim-support-hd-voice-and-device-protection/
Nexus 4, 5, 6, 7 and GPE devices have another update inbound starting today. Look out for build LMY47D
http://android.clients.google.com/packages/ota/google_hammerhead/785a2f7af3718dba7e569decde8b6c4dc476a309.signed-hammerhead-LRX22C-from-LRX21O.785a2f7a.zip
here's the OTA for anyone running 5.0, just gotta sideload it through ADB
Android 5.0.1 for the N5 apparently starting roll out today, according to Sprint
http://www.droid-life.com/2014/12/15/nexus-5-gets-android-5-0-1-update-today-according-to-sprint/