"New policy letter in the coming weeks, no mater what your OI is, will be required to RTO 4 days a week at your listed work location in WebPhone."
Utter cr-p! This is a blanket statement and is so obviously untrue as to barely need recognition. If you need an update, ask your manager.
Some Orgs are back full time, because they were full time before Covid.
Other Orgs were not full time before COVID and are asked to come in 1-3 days per week.
A lot depends on the available real estate where you are at. We went from 36 floors of real estate in my city, down to about 4, with about 40 spaces for drop in. 40 drop in spaces cannot accommodate 1000 employees every day.