The build number of this update is LMY47M and the OTA update has file size of of around 171 MB. Under the hood this update brings performance improvements and tweaks to achieve overall stability until Google announces something new at Google I/O this year.
If you own this smartphone then better go to Settings and then check for manual firmware update availability. Go to Settings > About Phone > System Update and then hit Check Now. If you can’t wait then pull the OTA from the Google servers by following the link below.
OTA Zip File: LMY47M from LRX21Z
Via: Android Police