If a game developer were to announce that a character were gay this far ahead of release it leads on to assume that it is somehow significant. So though it doesn't necessarily mean that there would be significant subject material pertaining to homosexuality it is hard to figure why the main characters sexual orientation would be news worthy if it there wasn't.

and the main love story is about Snow and Serah (ewwwwwww heterosexuality. I don't want to play that!).
Lol, when I found out that a love story would be central in FFXIII it seriously dampened my interest in the game.