I've just published draft #8 of SRFI 146.  It was submitted
by Marc Nieper-Wißkirchen, author of the SRFI.

  <https://srfi.schemers.org/srfi-146/>

Here are Marc's comments on the draft:

  Added special procedures for mappings to be created from
  ordered data

  Proposing a new definition for disjointness of types

This draft also fixes a mistake reported by Shiro Kawai: The
second example in Linear update section refers to set,
instead of mapping.

Here's the diff:

  <https://github.com/scheme-requests-for-implementation/srfi-146/compare/aa7856a32ba3810d2a56808111a72121428b0cbb...fcc352f759ea70eb9def709d5045421a3ef7015c>

Regards,

SRFI Editor