All the information you wanted and a few screenshots to boot.
The Destiny 2 update 1.2.3 is now live, and we have links to the patch notes and an update on the Solstice of Heroes:
Patch Notes for Update 1.2.3:
https://www.bungie.net/en/Explore/Detail/News/47034
Solstice of Heroes article:
https://www.bungie.net/en/Explore/Detail/News/47017