Guild tasks have been added.
By examining the new task boards found within any Adventurers' Guild, players may view and undertake the tasks of Eorzea's guilds. Obtaining and delivering the requested items will yield both rewards and skill points (awarded to the active class at time of completion).
Note the bolded parts? they separate Adventurer's Guild and "Eorzea's Guilds" and rather than typing out all 19 guilds associated with each class they figured Eorzea's Guilds would be good enough....little did they know we were all air heads.