The surveys I've seen have been pretty consistent (for people who can work from home most days): about 20% fully remote and about 20% five days per week in office with the balance coming in a few days per week. I see a pretty broad consensus that hybrid will be the main mode although mostly in office and fully remote will be significant too.

One challenge is that this means that in-office people that were used to everyone being physically present will largely have to adapt for many meetings (for example) to operate as if everyone were remote.