Currently all raids will drop loot from encounters on a per class per week basis. Subsequent runs will yield Spoils of Conquest that can be spent in certain places. A change being introduced in the future, I believe next season but am not 100% sure, will create a Raid Rotator that will make one of the non-featured raids pinnacle along with the featured raid (which is Vow of the Disciple, atm). The raid featured in this rotator will have farmable encounters.