.Keys: My bet is that they added voiced translations to the game.
I would bet the same, but the gamecard still says only English is supported (voice; other languages with text only), and the size is listed as 24 GB (which of course might mean the installed version with only one set of audio files, while the humungous offline installer includes all the various languages in one big pack).
I just hate how games have audio in several languages. Do Spanish and Italian people really HAVE TO have all the dialogue voice-acted for their languages? Can't they read subtitles, if they don't understand English? It is not like I ever get Finnish voice acting either, and frankly I prefer it that way.
If you really insist on having voice-acted audio in 12 different world languages including hindi, persian and arabic, use AI instead, to generate the voice acting on the fly. That should take much less space than actual voice files in various languages.
And why on earth do voice files take dozens of gigabytes anyway?!? Can't they compress them to mp3 or something? Do we really need some uncompressed 12-channel multistereo FLAC audio for mere speech? Ooh, it is so hi-fidelity that I can clearly hear the lisp of the voice actor!
It just seems so stupid that nowadays mere audio (speech) seems to take the bulk of storage space in games.