diff --git a/PRODUCT_RELEASE_NOTES.md b/PRODUCT_RELEASE_NOTES.md
index e8b785ea..4d9cab46 100644
--- a/PRODUCT_RELEASE_NOTES.md
+++ b/PRODUCT_RELEASE_NOTES.md
@@ -1,3 +1,7 @@
+## 4.12.0-prerelease7
+- #261 Zooming enhancements
+- #167 radiometry
+
 ## 4.12.0-prerelease6
 - show depth (+ gui and legend) in instrument view
 - #234, snapshots: --renderDepth writes a depth image as tiff
diff --git a/aardium/package.json b/aardium/package.json
index dcd35671..00672a3a 100644
--- a/aardium/package.json
+++ b/aardium/package.json
@@ -1,7 +1,7 @@
 {
   "name": "PRo3D",
   "productName": "PRo3D.Viewer",
-  "version": "4.12.0-prerelease6",
+  "version": "4.12.0-prerelease7",
   "description": "PRo3D, short for Planetary Robotics 3D Viewer, is an interactive 3D visualization tool to allow planetary scientists to work with high-resolution 3D reconstructions of the Martian surface.",
   "license": "AGPL",
   "copyright": "VRVis Zentrum für Virtual Reality und Visualisierung Forschungs-GmbH",
diff --git a/src/PRo3D.Viewer/Program.fs b/src/PRo3D.Viewer/Program.fs
index a34e20a5..e5e70b73 100644
--- a/src/PRo3D.Viewer/Program.fs
+++ b/src/PRo3D.Viewer/Program.fs
@@ -55,7 +55,7 @@ type Result =
       result : string;
    }
 
-let viewerVersion       = "4.12.0-prerelease6"
+let viewerVersion       = "4.12.0-prerelease7"
 let catchDomainErrors   = false
 
 open System.IO