YU had rolled out the CM 12.1 update for YU Yuphoria handset. The roll-out has already begun and Yuphoria users will get it in phased manner over a period of two weeks. The Cyanogen OS 12.1 is based on Android Lollipop 5.1.1.
Once updated users will get some great features like smart screen that will automatically adjust the display based on environment conditions. Update comes with a revamped Launcher with a great design. Calendar and Email id merged into one single App. More media (audio / video) codecs supports have been added and fresh audio FX UI has been updated.
Apart from this the Yuphoria handset overall performance should improve, there should be less heat up (amazing thermal control) and users can expect improved battery performance.
There is no info on when YU Yuphoria is going to get Android M