Bungie already answered this. "House of Wolves has no raid." Their exact wording! "There will be a raid in a later release." Their exact wording! Two facts. Two statements. Neither connected in any other way. A release later this year would be Comet in September. There is a Raid in Comet. Hence, there's the raid coming later this year. In Comet. Quests & Arena are the "raid" in HoW and how we get the armor and items normally received in raids.