I'm forwarding this message to srfi-announce so that more folks will know this information is now easily accessible:

---------- Forwarded message ----------
From: Arthur A. Gleckler <xxxxxx@speechcode.com>
Date: Wed, Aug 9, 2017 at 10:59 PM
Subject: Re: Adding two procedures to SRFI 121
To: John Cowan <xxxxxx@ccil.org>
Cc: Marc Nieper-Wißkirchen <xxxxxx@nieper-wisskirchen.de>, srfi <srfi-121@srfi.schemers.org>

On Mon, Aug 7, 2017 at 7:15 PM, Arthur A. Gleckler <xxxxxx@speechcode.com> wrote:
On Sun, Aug 6, 2017 at 1:52 PM, John Cowan <xxxxxx@ccil.org> wrote:
114 is obsoleted by 128, and I remember asking you to mark it so, but I don't know if that ever happened.

142 is obsoleted by 151.

I think these are the only three cases.

Noted.  I will display this information more prominently soon.

Okay, I've added "replaced by" and "replaces" information to these SRFIs on the home page, the final SRFIs page, and the home page (e.g.) and "README.org" page (e.g.) for each SRFI.  I've also document the terms "replaced by" and "replaces" in the FAQ (last item).  Finally, I've added links to the Status section of each affected SRFI document.  And the infrastructure supporting this allows multiple SRFIs to claim to replace any particular SRFI in case there are competing proposals.