Scheme Request for Implementation 256, "Minimal extension to SRFI 9/R7RS small record type definitions for inheritance", by Daphne Preston-Kendal, is now available for discussion.
Its draft and an archive of the ongoing discussion are available at https://srfi.schemers.org/srfi-256/. You can join the discussion of the draft by filling out the subscription form on that page. You can contribute a message to the discussion by sending it to [email protected]. Here's the abstract: A SRFI 9-style define-record-type is specified which allows subtyping while preserving encapsulation, in that the field structure of supertypes remains an implementation detail with which subtypes need not concern themselves. Regards, SRFI Editor
