Curse of Osiris launches tomorrow, December 5. Bungie will be taking the servers down in advance of the actual launch, which the company estimates will take place from 7:00 AM PST to 10:00 AM PST. That's 10:00 AM to 1:00 PM for us East Coasters, and various other times for everyone else in the world. As in the past, these are estimated times, and so the actual time might be either shorter or longer -- it has been both in the past. Once the servers go down, you'll be able to pre-load the game, which clocks in at 88 GB on PS4, 44 GB on Xbox One, and 68 GB on PC. Depending on how fast your connection is, you might want to start downloading as close to 7:00 AM PST as possible in order to start playing as soon as you can.