Android Nougat is the latest version of Android OS and all android devices users wish to install latest version to enjoy latest features of Google android OS. Last day I come to know from a XDA Developer forum thread that Samsung, a famous Korean mobile phone manufacturing company also starts a beta program(to install and test Android Nougat beta version) for its two latest and very known android smartphones, Galaxy S7 edge and S7. But unfortunately yet this beta program is only for UK and U.S.A users.
If you are resident of United Kingdom or United States of America and willing to test Android Nougat on your Samsung Galaxy S7 or Galaxy S7 edge smartphone then you can register and download it form here. However this is unofficial release because Korean company has yet not announced it as an official. It is shared by a senior member of XDA developer community ( mariolcela ). But as you can see after downloading this beta program app it show an error as you can see in above picture.