The list is as follows:
Amatsumagatsuchi has been shortened to “Amatsu”: Amatsumagatsuchi is the flagship monster of Monster Hunter Portable 3rd, a PlayStation Portable and PlayStation 3 title exclusive to Japan. In the recent Monster Hunter 4 Ultimate, “Amatsu” armor was available as downloadable content for the west via a monster carve exchange at a special vendor in-game. However, Monster Hunter Generations will be the first time western players can have a hands-on experience with fighting this majestic floating Elder Dragon.
Amatsumagatsuchi, localized as “Amatsu”
“Osutogaroa” has changed to “Nakarkos”: A mysterious new monster appearing in Monster Hunter Generations. According to Dasding, its localized name is a reference to the word “narkÅdÄs”, meaning “petrified”.
Osutogaroa now localized as Nakarkos
Several DLC armor pieces are found in the demo data: this includes “F Dark Meowgic Hood”, “Pirate J Armor”, and Danboard DLC. Most notably, the “F Dark Meowgic Hood” is most likely a reference to the Dark Magician Yu-Gi-Oh! palico armor from Japan’s release of Monster Hunter X (AKA MHGen’s original Japanese title) back in 2015.
Dark Magician palico armor advertisement (top left)
As a small word of caution, Dasding posted a disclaimer on the Monster Hunter subreddit about the new data, stating:
Monster Hunter Generations is a Nintendo 3DS exclusive game coming soon to the west this summer on July 15th 2016. For more information on MHGen, check out a gameplay video of a team taking down the Astalos of the Fated Four, here on GameSkinny!
[Images retrieved from Twitter, Hachima, and the Monster Hunter Wikia]
