Are there any more AMD-sponsored games coming this year?
Well see title. This year only saw Battlefield: Hardline as an 'AMD Gaming Evolved'-title, and the featured games list only mentions GTA V (which is neither nVidia nor AMD), and Star Citizen, which we're not going to see this year.
So what's to be expected? Anything more than maybe Rise of the Tomb Raider, Just Cause 3, Mirror's Edge, and Star Wars: Battlefront? Of which two of them are probably going to get slipped into next year...
Will Star Citizen and the Frostbite-games still offer Mantle-support (I guess not)?
While the competition has (in 2015): Dying Light, Project Cars, The Witcher 3, Evolve, and the upcoming Batman: Arkham Knight. I speculate the next @ss Creed, Call of Duty, and Rainbow Six will be on the 'list' as well.