Until Square Enix finally stands up and says something, this information remains a rumor.
But it certainly seems plausible. According to Gematsu citing FF-Reunion, the upcoming remaster (no, it's not a remake) of Final Fantasy X will actually come bundled with another remastered game…
Final Fantasy VII !!! Okay, sorry to do that to you. Nah, it's Final Fantasy X-2 , which makes more sense, anyway. The two remastered versions will apparently be packaged on the same retail disc, but a new scan from Japanese publication Shonen Jump says the titles will be available as separate downloads on the PlayStation Vita. The source also claims that each game will have its own International edition content and the release is slated for some time this year.
Final Fantasy X HD was announced back in 2011, after which, Square Enix went mute for nearly two years. It popped up again last month, when producer Shinji Hashimoto showed off the game running on Sony's new portable. Yeah, well, no chance I'm playing this on the freakin' Vita. Final Fantasy has always been meant for the big screen, as far as I'm concerned.