Hyperdimension Neptunia Rebirth 1 just had a 500+ MB update. Anyone with any idea what has changed?
According to this post
on the Gameindustri Reddit, the GOG versions of all Re;Birth games now have all the stuff the Steam versions have.
No idea, yet, if this means we have the Re;Birth 1+ extras though. Currently downloading the update.
Looking at the GOG store, all the extra stuff is new to buy content.
The 'Deluxe Pack' stuff is the artbooks and other goodies. Then there's the 'DLC Pack 2' for each game. All the new DLC content, we get to buy separately. And GOG don't yet seem to have the rights to do complete DLC packs for the games, for new players, so they don't have to buy 2 separate DLC packs for each game.
At present all the Neptunia stuff looks like it's on serious discount, including the new DLC.