Micromax Yu Yureka plus is an awsome phone because it comes with cyanogen mode. When we buy a new smartphone then the company gives us only 1 system update ( Android Version) .
But if you have Yu Yureka Plus with cyanogen mode then you can upgrade your phone in the latest Android Version and I have this smartphone and now I am using Naugat Android Version. When I bought it Then It came with Kitkate Version.
It has all the best features in camera , resolution etc.