>>28,29
My bad, it's not explicity on the agenda. R7RS-large is split into multiple phases, listed here: https://small.r7rs.org/wiki/WG2Dockets/. FFI is not on the current agenda, but is planned to be discussed by future working groups: https://small.r7rs.org/wiki/ReassignedDocket/
Due to the modular nature of R7RS, this shoudln't be too much of an issue, though if someone were to suggest a SRFI for FFI, this might change?