Lectures will be synchronously recorded. 6.S081 will have no exams and students will be graded mostly on programming labs (incl. individual check-off meetings). We are also hoping to hold interactive, online recitation-style class meetings instead of some of the synchronous lectures to connect with smaller groups of students at a convenient time. How this will work we don't yet, and partially depends on the enrollment.
See also 6.S081 Introduction to Operating Systems in the EECS subject updates.