We thought this was some kind of weird Japanese to English translation during Square Enix's E3 2019 showcase, but no, Final Fantasy VII Remake is actually going to ship on two discs, as evidenced by the picture above. To be clear, we're talking about the "first game" here -- the one that launches in March 2020, and takes place only in Midgar. But yeah, two whole Blu-ray discs. Wow.
We assume the game's size will primarily be due to high quality cutscenes, since Square Enix loves using them so much. Maybe we can expect some lengthy cinematic sequences that weren't even in the original Final Fantasy VII? It's looking very likely.