[gimp] NEWS, desktop: update release notes.

[Jehan <jehanp src gnome org>]

commit f9c68c0346a6c9f65b18c3b83e067ffaaa001ba5
Author: Jehan <jehan girinstud io>
Date:   Fri Mar 11 15:30:02 2022 +0100

    NEWS, desktop: update release notes.

 NEWS                                    | 21 +++++++++++++++++++++
 desktop/org.gimp.GIMP.appdata.xml.in.in |  1 +
 2 files changed, 22 insertions(+)
---
diff --git a/NEWS b/NEWS
index a0f2e5f5fc..1379113d67 100644
--- a/NEWS
+++ b/NEWS
@@ -27,6 +27,27 @@ Tools:
       This should hopefully make the now many options more
       understandable.
 
+Plug-ins:
+
+  - BigTIFF: our TIFF plug-in now officially supports BigTIFF import and
+    export.
+    * Import was actually already working transparently if you had
+      a recent enough libtiff. Now the recent libtiff is enforced by
+      dependency requirements.
+    * Export support was added with a checkbox in the interactive dialog
+      and a new "bigtiff" argument in the "file-tiff-save" PDB
+      procedure.
+    * When an interactive export of ClassicTIFF fails for the explicit
+      reason of "Maximum TIFF file size exceeded", the export dialog is
+      raised again with a message proposing to try again as BigTIFF.
+      This allows because discoverability and understandibility of the
+      issue, while not forcing BigTIFF export (since it might not be
+      supported everywhere).
+
+Build:
+
+  - libtiff dependency's minimum required version bumped to 4.0.0.
+
 
 Overview of Changes from GIMP 2.99.8 to GIMP 2.99.10
 ====================================================
diff --git a/desktop/org.gimp.GIMP.appdata.xml.in.in b/desktop/org.gimp.GIMP.appdata.xml.in.in
index 3e35a25ad9..d3bc1b4fe2 100644
--- a/desktop/org.gimp.GIMP.appdata.xml.in.in
+++ b/desktop/org.gimp.GIMP.appdata.xml.in.in
@@ -89,6 +89,7 @@
                      tool-options:line-art-settings">
           Redesigned and reorganized "Fill by line art detection" settings
           </_li>
+          <_li>Added support for the BigTIFF file format</_li>
         </ul>
       </description>
     </release>