Sony Mobile has released a stable update for the Lifelog application which moves the build number to 2.8.A.0.16. The new update adds Insights cards (this was first introduced to the Beta release last month) as well as the ability to log which songs you have listened to through Spotify. Other changes include power consumption improvements for those on Android Lollipop and some small changes in UI.
DOWNLOAD APK: Lifelog (2.8.A.0.16)
Thanks Himath and Rimaz!