http://www.pcgamer.com/destiny-2-pc-dlc-patches-and-updates-will-arrive-day-and-date-with-console/

Bungie will give everyone a week to get "raid ready" before releasing the raid. Once that's out, the plan is for the PC and console versions of Destiny 2 to run absolutely in sync.

Speaking to PC Gamer at a preview event last week Bungie's PC lead David Shaw said "with the raid you don't want the raid to be open on day one because it's like 'how fast can I get there'. Instead we'll delay a week so people have a chance to, I'm going to use the word 'casually' get ready for the raid, but they'll have the same amount of time, everybody's on the same page.