The DocBook Schema Version 5.2, Committee Specification Draft 01 is available for public review starting 04 April 2023 at 00:00 UTC and ends 03 May 2023 at 23:59 UTC.
You can download the ZIP file at:
https://docs.oasis-open.org/docbook/docbook/v5.2/csd01/docbook-v5.2-csd01.zip
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