No, not an April Fool's joke.
Start location: THE CHANTRY (Enter Firebase Zulu, take portal)
Level 44+
11 door missions including 3 defeat all.
2 delivery
8 outside clicky
1 AV (Lanaru the Mad)
75 Reward Merits
Unlocks Rularuu Bows, Shields, Swords...
Level 50 mobs drop Purples and Shards...