Marathon Update 1.1.5.2: Vault Breaker Extended to August 18
Bungie shipped update 1.1.5.2 for Marathon, extending the experimental Vault Breaker PvE mode's run through August 18 instead of the original August 4 end date. The patch also corrected the Key Template Armory reward description and upgraded free Sponsored Kits so starting weapons come with a random Enhanced mod.
Direct official patch notes posted to Steam by Bungie for an update that has already shipped.