The Destiny 2: Beyond Light update that they are calling “Destiny 3” is now preloading on rigs ahead of the launch Monday. Destiny 2 is now off-line while Bungie is also updating their server code base.
49 GB is equivalent to a dual layer BD 50 disc. The game itself is large enough to need a BDXL 128 GB disc which is the largest capacity available at present.
One great new feature is a cross save so that players who have a PC and a console can use their character as desired.
Destiny posted a full comment on the Steam community.