From Bungie:

“It is almost time to light up Tau Ceti. Marathon’s Server Slam, our open preview weekend, runs from February 26 at 10 AM PT to March 2 at 10 AM PT. This is your chance to jump in, play Marathon before launch, and help us spin up our global infrastructure at scale for the very first time. You will be able to play on Steam, PlayStation 5, and Xbox Series XS, with cross-play and cross-save enabled. We are also excited to be part of Steam Next Fest, so you will see Marathon there as well! … The Server Slam is a technical stress test. We are turning everything on worldwide, inviting as many of you in as we can, and then watching the systems closely as you do what you do best: log in, crew up, infil, exfil, log out, repeat.”