Didn't see a thread on this game so I thought I would make one
Monster Hunter Generations (X in Japan) is going to be the last game in the 4th generation of Monster Hunter, featuring monsters absent in 4U, such as Nargacuga, as well as brand new monsters, including 4 flagships! All weapons from 4U are present but the game's main feature is the ability to equip Hunting Styles for more customization. There are 4 styles: Guild, Aerial, Adept, and Striker. Guild plays exactly like the weapon did in 4U, Aerial gives up some attacks for the ability to jump off monsters or players with unique attacks in the air, Adept allows for a counterattack if an attack is dodged/guarded at the right time, and Striker resembles how the weapon was handled in previous generations as well as allowing 3 Hunting Arts instead of the 1 or 2 the other styles get. Hunting Arts are basically super moves, ranging from powerful attacks to self buffs.
Here are the trailers released so far
https://www.youtube.com/watch?v=vz7Ge7SJOX8
https://www.youtube.com/watch?v=s0BbplGgkCY
gaijinhunter's channel has translated official videos on each weapon and their Styles/Arts as well as other info on the game: https://www.youtube.com/channel/UCT84SVapAfSSD_iMfpKbFbA