Guild Tasks?

[Chrees]

Well the patch notes does specifically say adventurers guilds.

Which only serves to tell you where these quests can be obtained. As Mack noted above, they separated Adventurers' Guilds from Eorzea's guilds, most likely for a reason. And as for the German translation:

Indem man die Anschlagbretter in den Abenteurergilden der verschiedenen Stadtstaaten untersucht, kann man dort ausgeschriebene Aufgaben für die verschiedenen Gilden annehmen.

roughly translates to, "By examining the notice boards in the various city-states, one can undertake the posted tasks for the various guilds."