*breathes in*

-Revamped graphics with new 3D renders (Changed)

-Added light switch mechanic (Added)

-Changed Hudson's mechanics (Changed)

-Added droning ambience to the office (Added)

-Added swan lake music box that plays sometimes (Added)

-Changed how you die after a power outage (Changed)

-Added the humming of lights in your office (Added)

-Added extra sounds and audio signals for when the robots get in your office (Added)

-Revamped the phone calls (Changed)
-Added and removed some voicelines (Changed)

-MANY bug fixes (Changed)

-Changed button clicking sounds (Changed)

-Added more significance to the storyline/lore (good riddance)

-Retconned some old lore decisions

-Fixed the paycheck, newspaper (now a note from management), and game over screen to match the new graphics (Changed)

*breathes out*
I'm sure there's more I missed but that's all of the important stuff.