For a brief period yesterday / this morning (depending on where you're reading this from), Square Enix's official French store website prematurely listed a version of the HD remastered Final Fantasy X and Final Fantasy X-2 combo for PS4. This hasn't been officially announced yet - hence the "likely" in this story's title - but the fact that it showed up on an official company webpage makes it seem a pretty safe bet. That and, of course, the fact that it isn't a particularly surprising move.
In the meantime, I'll just go back to pining for a FFX-3 (cue
my topic on the audio drama "Will" included with the HD re-release.)
Source:
IGN