diff --git a/content/posts/xspec_412_release.md b/content/posts/xspec_412_release.md
new file mode 100644
index 0000000..c7d955b
--- /dev/null
+++ b/content/posts/xspec_412_release.md
@@ -0,0 +1,33 @@
+---
+date: 2026-09-22
+linktitle: Release XSpec v4.1.2
+title: Release XSpec v4.1.2
+weight: 6
+categories: ["Release"]
+tags: ["v4.1.2"]
+---
+
+<img align="right" src="https://github.com/xspec/xspec/blob/main/graphics/xspec-logo.svg" width="100px" alt="XSpec logo"/>
+
+## Release XSpec v4.1.2
+
+XSpec 4.1 supports testing XProc using MorganaXProc-IIIee and running tests for Schematron using an XProc pipeline. These are the highlights of XSpec v4.1:
+
+## Common to Languages Under Test
+* XSpec is tested with Saxon 12.10 and 13.0.
+* XSpec is tested with XML Calabash 3.0.54.
+* Saxon 11 is no longer supported.
+* XProc 1 is no longer supported.
+
+## XSLT
+* The code coverage feature has minor changes to make it compatible with Saxon 13.0 as well as Saxon 12.7 through 12.10 ([#2377](https://github.com/xspec/xspec/issues/2377)).
+
+## Schematron
+* You can use an XProc 3 pipeline to execute an XSpec test for a Schematron schema that has an XSLT-based queryBinding. Instructions are in the [XSpec wiki](https://github.com/xspec/xspec/wiki/Running-with-XProc#xspec-test-for-schematron-with-xproc-3-and-xslt-based-implementation-of-schematron). The case of XQuery-based queryBinding has been supported since v3.3.
+* The built-in SchXslt2 library is v1.11.2.
+
+## XProc
+* You can execute a test for XProc with either MorganaXProc-III Extended Edition (new in v4.1) or XML Calabash 3 (since v4.0). Both processors support executing your test suite from XProc, Ant, or a shell/batch script. For details, see [XSpec test for XProc with XProc 3 and MorganaXProc-IIIee XProc processor](https://github.com/xspec/xspec/wiki/Running-with-XProc#xspec-test-for-xproc-with-xproc-3-and-morganaxproc-iiiee-xproc-processor) or other [mentions of MorganaXProc](https://github.com/search?q=repo%3Axspec%2Fxspec+MorganaXProc&type=wikis) in the XSpec wiki.
+* Support for testing XProc is tested with MorganaXProc-IIIee 1.8.17 and XML Calabash 3.0.54.
+
+Many thanks to all the XSpec contributors who made this release possible! They are listed in the [release notes](https://github.com/xspec/xspec/releases/tag/4.1.2).
diff --git a/static/editors/oxygen/latest.xhtml b/static/editors/oxygen/latest.xhtml
index 6ef8ae8..fece0af 100644
--- a/static/editors/oxygen/latest.xhtml
+++ b/static/editors/oxygen/latest.xhtml
@@ -15,6 +15,13 @@
 		</div>
 		<div>
 			<h2 style="margin-top: 8mm">Changelog (not inclusive)</h2>
+			<div>
+				<h3>v4.1.2</h3>
+				<ul>
+					<li>Official release of v4.1. For features, see v4.1.1 listing below.</li>
+					<li>Support for testing XProc with MorganaXProc-IIIee is tested with v1.8.17.</li>
+				</ul>
+			</div>
 			<div>
 				<h3>v4.1.1</h3>
 				<ul>
@@ -26,7 +33,7 @@
 						XML Calabash 3 (since v4.0). Both processors support executing your test suite
 						from XProc, Ant, or a shell/batch script.</li>
 					<li>The XSLT code coverage feature has minor changes to make it compatible with
-						Saxon 13.0 as well as Saxon 12.7-12.10.</li>
+						Saxon 13.0 as well as Saxon 12.7 through 12.10.</li>
 					<li>SchXslt2 1.11.2 replaces 1.11.1, for testing Schematron schemas having an XSLT-based queryBinding.</li>
 					<li>Tested with Saxon 12.10 and 13.0. XSpec no longer supports Saxon 11.</li>
 					<li>Support for testing XProc is tested with MorganaXProc-IIIee 1.8.16 and XML Calabash 3.0.54.</li>
@@ -108,13 +115,6 @@
 					<li>Tested with Saxon 12.9 and 11.7. XSpec no longer supports Saxon 10.</li>
 				</ul>
 			</div>
-			<div>
-				<h3>v3.3.2</h3>
-				<ul>
-					<li>Official release of v3.3. For features, see v3.3.1 listing below.</li>
-					<li>Tested with Saxon 12.9, 11.7, and 10.9.</li>
-				</ul>
-			</div>
 		</div>
 	</body>
 </html>
diff --git a/static/editors/oxygen/oxygen-addon.xml b/static/editors/oxygen/oxygen-addon.xml
index 2cc005a..e769e04 100644
--- a/static/editors/oxygen/oxygen-addon.xml
+++ b/static/editors/oxygen/oxygen-addon.xml
@@ -14,9 +14,9 @@
 			* Update the changelog in xt:description
 		-->
 		<xt:location
-			href="https://github.com/xspec/xspec/archive/refs/tags/v4.1.1.zip" />
+			href="https://github.com/xspec/xspec/archive/refs/tags/v4.1.2.zip" />
 
-		<xt:version>4.1.1</xt:version>
+		<xt:version>4.1.2</xt:version>
 
 		<!-- Note that supporting multiple oXygen versions may be hard to maintain, because
 			* oXygen add-on and framework require manual testing.