The update comes with software build number A510FDXXU4CQDL. The update weighs around 1 GB in size. The update include all the goodies of Android 7.0 Nougat i.e. New Multi-window allows the user to switch between apps with a double tap or run two apps side by side. More personalized settings and smarter notifications allow users to be more productive with less effort. It also includes the enhanced version of Doze.
Along with the Android 7.0 Nougat, It also includes the new user interface that runs on the Galaxy S7 and Galaxy S7 edge. However the update is rolling out as OTA so it might take some time to reach each and every user in the country. If the notification of update is not yet popped up on your phone you can manually check it by going through the settings>>about phone>>software update.
People who installed the latest update do share your experiences with us via comments below.