I'm not an insider like
@gyngyn, so I don't have that perspective. But, as an applicant, it doesn't make sense to me that adcoms would cut back, because, in a virtual world, more interviews doesn't cost them anything but a little time, and it gives them more choices.
Keeping in mind that in person interviews always cost candidates way more than schools, considering travel and lodging for us and lunch and swag for them, money was never really the constraining element for them. As
@LizzyM said, it's faculty time, both to conduct the interview and then to deliberate afterwards. That said, to the extent they made the adjustment last year, out of an abundance of caution and out of a nod to the significantly increased pool, it's difficult for me as an applicant to see why they would now cut back, and thereby limit their ultimate choices, just to save a little time.
This is, however, a question better posed to
@gyngyn.
@Goro has already said his school isn't doing more. Does
@gyngyn know that her school is actually doing less? Regardless of what one school is doing here or there, my guess would be the number of IIs will be relatively static across the board as compared to last cycle.
FWIW, we all had the same speculation a few years ago about NYU when it went tuition free. Many people thought they would cut number of IIs down significantly since their yield was sure to skyrocket. Sure enough, their yield did double, from around 1/3 to 2/3, meaning they could have cut the number of IIs in half to fill their class with the same post-II acceptance rate.
But they didn't, apparently because they already had the capacity to see around 1,000 people per cycle. So they continue to do that. The chance of scoring an A after an interview has plummeted as a result, but they like choosing from among 1,000 candidates, so they continue to do so. My guess is that the same will apply with virtual interviews, and that schools will not scale back just because they realize they can. We'll see!