Answer: What In The World Happened Here? XXXX CLV (155):
This is a new light-hearted puzzle to make up for the black mystery that is CLIV (154). As far as we know, no one named CLIVe was murdered in that building, though.
A brewer in Queensland, Australia leased a Barrier Reef island named Pumpkin Island and renamed it "XXXX" Island.
Purchasers of XXXX beer might find a ticket in the slabbie that entitles them & 3 mates to a short sweet holiday.