Purely on numbers, this delivers 14 new quests, five new weapons, three complete armour sets, one Palico weapon and armour set, a bonus Brown Pal Palico, three Guild Card backgrounds and seven Guild Card titles. Phew.
The most significant arrival is the powerful Star Knight Armour, which had been previously only available to those that visited Universal Studios Japan. However, this will be added on Friday 17th July.
In order to access the content, connect your Nintendo 3DS to the Internet, load Monster Hunter 4 Ultimate, enter the DLC menu and download everything that you see!