According to what looks like a Jump Magazine leak (below), the HD remaster of Final Fantasy X is coming to the PlayStation with a Final Fantasy X-2 remaster on the same disc. Both the Final Fantasy X and X-2 HD versions are also supposedly packed with the "international version" content. Originally, that consisted of bonus extras like concept art, trailers and interviews.
The HD versions of Final Fantasy X and it sequel X-2 will be sold separately on the Vita, the rumoured leak states.
Kotaku is following up with Square Enix and will update this post should the company comment.