diff --git a/index.bs b/index.bs
index ac69b28..b8b993a 100755
--- a/index.bs
+++ b/index.bs
@@ -1,9 +1,9 @@
Group: AOM
-Status: FD
-Text Macro: SPECVERSION v1.2.0
+Status: WGD
+Text Macro: SPECVERSION v1.2.1
Title: AV1 Image File Format (AVIF)
-URL: https://aomediacodec.github.io/av1-avif/v1.2.0.html
+URL: https://aomediacodec.github.io/av1-avif
Shortname: av1-avif
Editor: Yannis Guyon, Google, yguyon@google.com
Editor: Leo Barnes, Apple, lbarnes@apple.com
@@ -12,12 +12,12 @@ Former Editor: Cyril Concolato, Netflix, cconcolato@netflix.com
Former Editor: Paul Kerr, Netflix, pkerr@netflix.com
Former Editor: Anders Klemets, Microsoft, Anders.Klemets@microsoft.com
Abstract: This document specifies syntax and semantics for the storage of [[!AV1]] images in the generic image file format [[!HEIF]], which is based on [[!ISOBMFF]]. While [[!HEIF]] defines general requirements, this document also specifies additional constraints to ensure higher interoperability between writers and readers when [[!HEIF]] is used with [[!AV1]] images. These constraints are based on constraints defined in the Multi-Image Application Format [[!MIAF]] and are grouped into profiles inspired by the profiles defined in [[!MIAF]].
-Date: 2025-10-16
+Date: 2026-01-05
Repository: AOMediaCodec/av1-avif
Text Macro: ADDITIONALLOGO https://aomedia.org/assets/images/avif-logo-rgb.svg
!Latest approved version: https://aomediacodec.github.io/av1-avif/latest-approved.html
!Latest version (published or draft): https://aomediacodec.github.io/av1-avif/index.html
-!Previously approved version: https://aomediacodec.github.io/av1-avif/v1.1.0.html
+!Previously approved version: https://aomediacodec.github.io/av1-avif/v1.2.0.html
Metadata Order: This version, !*, *
@@ -1295,43 +1295,7 @@ The "Version(s)" column in the following table lists the version(s) of the boxes
The media type "image/avif" is officially registered with IANA and available at: https://www.iana.org/assignments/media-types/image/avif.
-Changes since v1.1.0 release
- - EDITORIAL: Stop using `dfn value` for definitions.
- - EDITORIAL: Add assert-ids in the spec for conformance file testing and ComplianceWarden
- - Add required list of boxes for AVIF files
- - EDITORIAL: Add "per item" to item property definitions
- - EDITORIAL: Fix broken link for latest-draft.html
- - Relax constraint on transformative properties in derivation chains to only apply to grid items
- - Change ispe width to correspond to UpscaledWidth
- - Clarify relationship between av1C, metadata OBUs and item properties
- - EDITORIAL: Update list of other item properties
- - Further clarify relationship between av1C, metadata OBUs and item properties
- - Add information on tmap, grpl and altr
- - Replace recommendations regarding still picture flags in image items by a note
- - Add section 4.2.2 "Sample Transform Derived Image Item"
- - Add Appendix A "Sample Transform Derived Image Item Examples"
- - Add restriction on usage of clap property
- - Adopt MIAF shared constraints
- - EDITORIAL: Clean up usage of dfn and linking
- - Clarify required versions of non-essential item properties
- - EDITORIAL: Add refs, fix wording and format in clauses 1,2
- - EDITORIAL: Add sato, alpha, depth, progressive in Scope
- - Clean up linking to base specs and duplicated information
- - EDITORIAL: Use Markdown syntax coloring for code snippets
- - EDITORIAL: Consistently use dfn noexport for derived items
- - EDITORIAL: Remove Sample Transform sections from TOC
- - EDITORIAL: Add references in the Sample Transform sections
- - EDITORIAL: Indent notes as the list items they refer to
- - EDITORIAL: Remove inconsistent dots in 9.1.2
- - Change structure of optional table of boxes
- - Add hidden image item recommendation
- - Remove mentions of ftyp compatible_brands
- - Remove avio brand recommendation
- - EDITORIAL: Fix broken lines in Sample Transform examples
- - EDITORIAL: Make assert IDs between profiles unique
- - Update the HEIF, ISOBMFF, and MIAF references to the latest versions
- - EDITORIAL: Merge asserts for avio brand
- - EDITORIAL: Clarify sato item requirements
+Changes since v1.2.0 release
Appendix A: (informative) Sample Transform Derived Image Item Examples