Since the whole nation is currently WFH (working from home), I am assuming the process will be slightly delayed but probably not too much thanks to Zoom, Slack, Google meet etc. The visa concern you brought is valid. It takes 1-2 months for an international student to schedule and interview for an F-1 visa. The time frame can easily stretch to 3-4 months due to lack of interview slot at a busy consular/embassy, and administrative processing (i.e. "check") by the department of state. Considering there is a portion of F-1 international students in every cohort, I think Matt will keep the admission criteria unchanged, and expand the wait list in case candidates can't make their ways to the US. It means more hope for some candidates, and more waiting for some candidates. Some local candidates in the wait list may get notification even in the summer. Just my 2 cents.