The venerable Kingdom Hearts II and Kingdom Hearts: Birth by Sleep may receive HD remasters, if the end credits of Kingdom Hearts HD 1.5 ReMIX are any indication.
Images and a video of the collection's credits (it's not clear which game's credits, in particular) have surfaced online, and strongly hint that other series installments could be remastered in HD soon. Kingdom Hearts HD 1.5 ReMIX includes Kingdom Hearts Final Mix, Re:Chain of Memories, and the cutscenes from 358/2 Days, but the image and video below lend credence to a follow-up collection (presumably, Kingdom Hearts HD 2.5 ReMIX) that includes Kingdom Hearts II, Birth by Sleep, and the cutscenes from Re:Coded.
Character designer Tetsuya Nomura has hinted that more HD remakes of Kingdom Hearts games could follow HD 1.5 ReMIX. We'll update you as this story unfolds; for now, drop a comment below and let us know if you'd like to see Kingdom Hearts II and its brethren recast in HD with trophy support.