Between the cascade of release date changes announced by Warner Bros. yesterday — including moving “Dune” to Oct. 1, 2021, “The Batman” to March 4, 2022 and “The Flash” to Nov. 4, 2022 — and Disney’s announcement on Sept. 23 that the studio was moving the bulk of its 2020 feature releases to 2021, it’s safe to say that the domestic theatrical business has effectively shut down for the rest of 2020. Just three major studio releases — DreamWorks’ “The Croods: A New Age,” Pixar’s “Soul,” and Warner Bros. “Wonder Woman 1984” — remain on the calendar for this year, the latter two written in the faintest pencil marks possible.