Just caught my Turbo trying to update on it's own

I was sitting in my car and looked at the screen and I noticed that the phone was downloading MotorolaOTA 4.0 Does anyone know what it is? I am currently running KitKat 4.4.4 and never did the Lollipop update.

I also stopped the download in process but it appears that the phone would love to continue the download.

Thanks

gman