MIT has opened recruitment registration for this fall.
I received an email today from MIT's President, indicating that only some undergraduates will be allowed back on campus. Research staff and faculty get first priority, followed by grad students (as most require lab access, and on-campus grad student housing is apartment-style), followed by some undergrads whose studies require that they be on campus. All undergrads will be housed in single-occupancy rooms even though that means turning doubles and triples into singles. (There are a few quads and quints on campus, and I'd call dibs on one if it were my senior year and I were guaranteed to have it to myself for both fall and spring semester.
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My WAG is that most freshmen will be told to stay home, since most freshmen are taking core courses with 500+ person lectures that can be streamed, and recitation sections that can be done via Zoom or other platforms.
MIT Panhel has been non-specific as to how they will conduct recruitment. If I were they, I'd defer formal recruitment to the spring, but who knows if there will be a COVID spike this winter?