diff --git a/_data/nav.yml b/_data/nav.yml
index 2cab79e0..03cde04a 100644
--- a/_data/nav.yml
+++ b/_data/nav.yml
@@ -3,12 +3,12 @@
 - name: Releases
   submenuitems:
     - name: Latest Release
-      link: /releases/1.4.0/
+      link: /releases/1.5.0/
     - name: Archived Releases
       link: /releases/archive/
     - name: SPACE
-    - name: Under Development (1.5.0)
-      link: /releases/1.5.0/
+    - name: Under Development (1.6.0)
+      link: /releases/1.6.0/
     - name: Under Development (2.0.0)
       link: /releases/2.0.0/
 - name: Ontology
diff --git a/_data/releases/releases.yml b/_data/releases/releases.yml
index f1307e17..ad708dfe 100644
--- a/_data/releases/releases.yml
+++ b/_data/releases/releases.yml
@@ -40,3 +40,6 @@
 - title: 1.4.0
   date: 2025-05-29
   desc: Adoption of UCO 1.4.0.  Revision to semi-open vocabulary pattern, with other bug fixes and test improvements.  A <code>case-investigation:ProvenanceRecord</code> is now permitted to have 0 contained objects.
+- title: 1.5.0
+  date: 2025-07-24
+  desc: Adoption of UCO 1.5.0.  Bug fixes and test improvements.
diff --git a/releases/1.4.0/index.md b/releases/1.4.0/index.md
index c3ecb92b..62bb1141 100644
--- a/releases/1.4.0/index.md
+++ b/releases/1.4.0/index.md
@@ -11,6 +11,8 @@ custom_css: releases
 
 ## Ontology File(s)
 
+[GitHub](https://github.com/casework/CASE/releases/tag/1.4.0)
+
 
 ## Release Notes
 
diff --git a/releases/1.5.0/index.md b/releases/1.5.0/index.md
index 99b172f5..489da55d 100644
--- a/releases/1.5.0/index.md
+++ b/releases/1.5.0/index.md
@@ -6,14 +6,22 @@ custom_css: releases
 
 # {{ page.title }}
 
-*Date: TBD*
+*Date: 2026-07-24*
 
 
 ## Ontology File(s)
 
+[GitHub](https://github.com/casework/CASE/releases/tag/1.5.0)
+
 
 ## Release Notes
 
+CASE 1.5.0 incorporates required refinements and updates, building on the stable 1.0.0 release.  Following [SemVer](https://semver.org/spec/v2.0.0.html), additive improvements will continue to be accepted, but backwards-incompatible changes will be scheduled only for the 2.0.0 release, which will come after at least 6 months to possibly 12 months.
+
+This release adopts [UCO 1.5.0](https://unifiedcyberontology.org/releases/1.5.0/), incorporating bugfixes and test improvements from UCO 1.5.0.
+
+With the adoption of UCO 1.5.0, [`uco-action:Technique` is now available](https://github.com/ucoProject/UCO/issues/666), so `case-investigation:InvestigativeAction` specializations may now be enumerated within frameworks and extended without confusion to the original framework.  The [UCO 1.5.0 tests for `uco-action:Technique`](https://github.com/ucoProject/UCO/tree/1.5.0/tests/examples/technique) show how `Technique`s can be used, have their usage tested, and extended.
+
 
 ### Focus
 
@@ -34,3 +42,11 @@ custom_css: releases
 
 
 ## Documentation
+
+Generated documentation is available at this site:
+
+[https://ontology.caseontology.org/](https://ontology.caseontology.org/)
+
+Be aware that the documentation at that site will only show the most recent release.  The upper-left corner of the documentation pages shows the ontology version being reviewed.
+
+Users interested in seeing the rendered documentation at this version "Back in time" should locally clone the ontology documentation repository, checking out [this branch](https://github.com/casework/ontology.caseontology.org/tree/archive/release-1.5.0), and follow the deployment directions in `CONTRIBUTE.md`.
diff --git a/releases/1.6.0/index.md b/releases/1.6.0/index.md
new file mode 100644
index 00000000..29f3b464
--- /dev/null
+++ b/releases/1.6.0/index.md
@@ -0,0 +1,36 @@
+---
+title: 1.6.0 Release
+layout: releases
+custom_css: releases
+---
+
+# {{ page.title }}
+
+*Date: TBD*
+
+
+## Ontology File(s)
+
+
+## Release Notes
+
+
+### Focus
+
+
+#### Breaking Changes
+
+*(These are changes to ontologies, classes or properties in the preexisting ontology that make the new release non-backward-compatible.)*
+
+
+#### Changes
+
+*(These are changes to ontologies, classes or properties in the preexisting ontology.)*
+
+
+#### Bug Fixes
+
+*(These are bugs found within the preexisting ontology that have been fixed.)*
+
+
+## Documentation