I've just published draft #8 of SRFI 160.  It was submitted by John Cowan, author of the SRFI.

  <https://srfi.schemers.org/srfi-160/>

Here are John's comments on the draft:

  This is a new version of SRFI 160.  The support for u1vectors (bitvectors) has been removed from it, not because they are not useful, but because they are different enough in both specification and implementation to be put into a future SRFI of their own.

Here's the diff:

Regards,

SRFI Editor