The above render of the rose gold Samsung Galaxy S8 was obtained by PriceRaja, an Indian ” only exclusive and best mobile research and price comparison website”. Pink rose was not one of the Galaxy S8's original colour variants, but is probably going to be added due to (probably) how popular rose gold is with Apple users. The render shows a Galaxy S8+, but it is reasonable to believe that both + and regular S8 will be getting a new colour variation.
Specification of the rose gold Samsungs will, naturally, be the same as other versions'.