At the Mobile World Congress 2014 in Barcelona, Samsung announced support for multi-screen games made on Unity.
This was stated on Twitter by Unity evangelist Oleg Pridyuk.
Samsung announces #unity3d support of multi-screen games and other new tech, explains Unity is awesome #MWC14 pic.twitter.com/CE9M18q8Zp— Oleg Pridiuk (@iWozik) February 26, 2014