Full notes
Full Proxy - Ultimate Hacker update
Read the full published notes in a cleaner layout. The original post stays linked below.
99.9% of you will have never even encountered this bug, but for the 0.1% of you out there, this one's for you. I can't say what it is because it would contain spoilers, just know that the fix is there, and it loves you.
Source
Changelog.gg summarizes and formats this update. How we read updates.