diff --git a/java-file-formats-toc.html b/java-file-formats-toc.html
index 94099a8..d08c61c 100644
--- a/java-file-formats-toc.html
+++ b/java-file-formats-toc.html
@@ -191,7 +191,7 @@
     </li>
 	  <li>
         Release Notes
-        <ul><li>2025 Volume 3  - v31.*<ul><li> Weekly Nuget Release <ul><li><a href="/java-file-formats/release-notes/v31.1.18">v31.1.18</a></li></ul></li><li><a href="/java-file-formats/release-notes/v31.1.17">v31.1.17 Main release</a></li></ul></li><li>2025 Volume 2 - v30.*<ul><li> Weekly Nuget Release <ul><li><a href="/java-file-formats/release-notes/v30.2.4">v30.2.4</a></li><li><a href="/java-file-formats/release-notes/v30.1.42">v30.1.42</a></li><li><a href="/java-file-formats/release-notes/v30.1.41">v30.1.41</a></li><li><a href="/java-file-formats/release-notes/v30.1.40">v30.1.40</a></li><li><a href="/java-file-formats/release-notes/v30.1.39">v30.1.39</a></li><li><a href="/java-file-formats/release-notes/v30.1.38">v30.1.38</a></li></ul></li><li><a href="/java-file-formats/release-notes/v30.2.4">v30.2.4 Service Pack Release</a></li><li><a href="/java-file-formats/release-notes/v30.1.37">v30.1.37 Main Release</a></li></ul></li><li>2025 Volume 1 - v29.*<ul><li> Weekly Nuget Release <ul><li><a href="/java-file-formats/release-notes/v29.2.11">v29.2.11</a></li><li><a href="/java-file-formats/release-notes/v29.2.10">v29.2.10</a></li><li><a href="/java-file-formats/release-notes/v29.2.8">v29.2.8</a></li><li><a href="/java-file-formats/release-notes/v29.2.7">v29.2.7</a></li><li><a href="/java-file-formats/release-notes/v29.2.5">v29.2.5</a></li><li><a href="/java-file-formats/release-notes/v29.1.41">v29.1.41</a></li><li><a href="/java-file-formats/release-notes/v29.1.40">v29.1.40</a></li><li><a href="/java-file-formats/release-notes/v29.1.39">v29.1.39</a></li><li><a href="/java-file-formats/release-notes/v29.1.38">v29.1.38</a></li><li><a href="/java-file-formats/release-notes/v29.1.37">v29.1.37</a></li><li><a href="/java-file-formats/release-notes/v29.1.35">v29.1.35</a></li></ul></li><li><a href="/java-file-formats/release-notes/v29.2.4">v29.2.4 Service Pack Release</a></li><li><a href="/java-file-formats/release-notes/v29.1.33">v29.1.33 Main Release</a></li></ul></li><li>2024 Volume 4 - v28.*<ul><li>Weekly Nuget Release <ul><li><a href="/java-file-formats/release-notes/v28.2.12">v28.2.12</a></li><li><a href="/java-file-formats/release-notes/v28.2.11">v28.2.11</a></li><li><a href="/java-file-formats/release-notes/v28.2.9">v28.2.9</a></li><li><a href="/java-file-formats/release-notes/v28.2.7">v28.2.7</a></li><li><a href="/java-file-formats/release-notes/v28.2.6">v28.2.6</a></li><li><a href="/java-file-formats/release-notes/v28.2.5">v28.2.5</a></li><li><a href="/java-file-formats/release-notes/v28.2.4">v28.2.4</a></li><li><a href="/java-file-formats/release-notes/v28.1.41">v28.1.41</a></li><li><a href="/java-file-formats/release-notes/v28.1.39">v28.1.39</a></li><li><a href="/java-file-formats/release-notes/v28.1.38">v28.1.38</a></li><li><a href="/java-file-formats/release-notes/v28.1.37">v28.1.37</a></li><li><a href="/java-file-formats/release-notes/v28.1.36">v28.1.36</a></li><li><a href="/java-file-formats/release-notes/v28.1.35">v28.1.35</a></li></ul></li><li><a href="/java-file-formats/release-notes/v28.2.3">v28.2.3 Service Pack Release</a></li><li><a href="/java-file-formats/release-notes/v28.1.33">v28.1.33 Main Release</a></li></ul></li>
+        <ul><li>2025 Volume 3  - v31.*<ul><li> Weekly Nuget Release <ul><li><a href="/java-file-formats/release-notes/v31.1.20">v31.1.20</a></li><li><a href="/java-file-formats/release-notes/v31.1.18">v31.1.18</a></li></ul></li><li><a href="/java-file-formats/release-notes/v31.1.17">v31.1.17 Main release</a></li></ul></li><li>2025 Volume 2 - v30.*<ul><li> Weekly Nuget Release <ul><li><a href="/java-file-formats/release-notes/v30.2.4">v30.2.4</a></li><li><a href="/java-file-formats/release-notes/v30.1.42">v30.1.42</a></li><li><a href="/java-file-formats/release-notes/v30.1.41">v30.1.41</a></li><li><a href="/java-file-formats/release-notes/v30.1.40">v30.1.40</a></li><li><a href="/java-file-formats/release-notes/v30.1.39">v30.1.39</a></li><li><a href="/java-file-formats/release-notes/v30.1.38">v30.1.38</a></li></ul></li><li><a href="/java-file-formats/release-notes/v30.2.4">v30.2.4 Service Pack Release</a></li><li><a href="/java-file-formats/release-notes/v30.1.37">v30.1.37 Main Release</a></li></ul></li><li>2025 Volume 1 - v29.*<ul><li> Weekly Nuget Release <ul><li><a href="/java-file-formats/release-notes/v29.2.11">v29.2.11</a></li><li><a href="/java-file-formats/release-notes/v29.2.10">v29.2.10</a></li><li><a href="/java-file-formats/release-notes/v29.2.8">v29.2.8</a></li><li><a href="/java-file-formats/release-notes/v29.2.7">v29.2.7</a></li><li><a href="/java-file-formats/release-notes/v29.2.5">v29.2.5</a></li><li><a href="/java-file-formats/release-notes/v29.1.41">v29.1.41</a></li><li><a href="/java-file-formats/release-notes/v29.1.40">v29.1.40</a></li><li><a href="/java-file-formats/release-notes/v29.1.39">v29.1.39</a></li><li><a href="/java-file-formats/release-notes/v29.1.38">v29.1.38</a></li><li><a href="/java-file-formats/release-notes/v29.1.37">v29.1.37</a></li><li><a href="/java-file-formats/release-notes/v29.1.35">v29.1.35</a></li></ul></li><li><a href="/java-file-formats/release-notes/v29.2.4">v29.2.4 Service Pack Release</a></li><li><a href="/java-file-formats/release-notes/v29.1.33">v29.1.33 Main Release</a></li></ul></li><li>2024 Volume 4 - v28.*<ul><li>Weekly Nuget Release <ul><li><a href="/java-file-formats/release-notes/v28.2.12">v28.2.12</a></li><li><a href="/java-file-formats/release-notes/v28.2.11">v28.2.11</a></li><li><a href="/java-file-formats/release-notes/v28.2.9">v28.2.9</a></li><li><a href="/java-file-formats/release-notes/v28.2.7">v28.2.7</a></li><li><a href="/java-file-formats/release-notes/v28.2.6">v28.2.6</a></li><li><a href="/java-file-formats/release-notes/v28.2.5">v28.2.5</a></li><li><a href="/java-file-formats/release-notes/v28.2.4">v28.2.4</a></li><li><a href="/java-file-formats/release-notes/v28.1.41">v28.1.41</a></li><li><a href="/java-file-formats/release-notes/v28.1.39">v28.1.39</a></li><li><a href="/java-file-formats/release-notes/v28.1.38">v28.1.38</a></li><li><a href="/java-file-formats/release-notes/v28.1.37">v28.1.37</a></li><li><a href="/java-file-formats/release-notes/v28.1.36">v28.1.36</a></li><li><a href="/java-file-formats/release-notes/v28.1.35">v28.1.35</a></li></ul></li><li><a href="/java-file-formats/release-notes/v28.2.3">v28.2.3 Service Pack Release</a></li><li><a href="/java-file-formats/release-notes/v28.1.33">v28.1.33 Main Release</a></li></ul></li>
 		<li>2024 Volume 3 - v27.*<ul><li>Weekly Nuget Release <ul><li><a href="/java-file-formats/release-notes/v27.2.5">v27.2.5</a></li><li><a href="/java-file-formats/release-notes/v27.2.4">v27.2.4</a></li><li><a href="/java-file-formats/release-notes/v27.2.3">v27.2.3</a></li><li><a href="/java-file-formats/release-notes/v27.1.58">v27.1.58</a></li><li><a href="/java-file-formats/release-notes/v27.1.57">v27.1.57</a></li><li><a href="/java-file-formats/release-notes/v27.1.56">v27.1.56</a></li><li><a href="/java-file-formats/release-notes/v27.1.55">v27.1.55</a></li><li><a href="/java-file-formats/release-notes/v27.1.53">v27.1.53</a></li><li><a href="/java-file-formats/release-notes/v27.1.52">v27.1.52</a></li><li><a href="/java-file-formats/release-notes/v27.1.51">v27.1.51</a></li><li><a href="/java-file-formats/release-notes/v27.1.50">v27.1.50</a></li></ul></li><li><a href="/java-file-formats/release-notes/v27.2.2">v27.2.2 Service Pack Release</a></li><li><a href="/java-file-formats/release-notes/v27.1.48">v27.1.48 Main Release</a></li></ul></li>
 		<li>2024 Volume 2 - v26.*<ul><li>Weekly Release<ul><li><a href="/java-file-formats/release-notes/v26.2.14">v26.2.14</a></li><li><a href="/java-file-formats/release-notes/v26.2.13">v26.2.13</a></li><li><a href="/java-file-formats/release-notes/v26.2.12">v26.2.12</a></li><li><a href="/java-file-formats/release-notes/v26.2.11">v26.2.11</a></li><li><a href="/java-file-formats/release-notes/v26.2.10">v26.2.10</a></li><li><a href="/java-file-formats/release-notes/v26.2.9">v26.2.9</a></li><li><a href="/java-file-formats/release-notes/v26.2.8">v26.2.8</a></li><li><a href="/java-file-formats/release-notes/v26.2.7">v26.2.7</a></li><li><a href="/java-file-formats/release-notes/v26.2.5">v26.2.5</a></li><li><a href="/java-file-formats/release-notes/v26.1.42">v26.1.42</a></li><li><a href="/java-file-formats/release-notes/v26.1.41">v26.1.41</a></li><li><a href="/java-file-formats/release-notes/v26.1.40">v26.1.40</a></li><li><a href="/java-file-formats/release-notes/v26.1.39">v26.1.39</a></li><li><a href="/java-file-formats/release-notes/v26.1.38">v26.1.38</a></li></ul></li><li><a href="/java-file-formats/release-notes/v26.2.4">v26.2.4 Service Pack Release</a></li><li><a href="/java-file-formats/release-notes/v26.1.35">v26.1.35 Main Release</a></li></ul></li>
 		<li>2024 Volume 1 - v25.*<ul><li>Weekly Release<ul><li><a href="/java-file-formats/release-notes/v25.2.7">v25.2.7</a></li><li><a href="/java-file-formats/release-notes/v25.2.6">v25.2.6</a></li><li><a href="/java-file-formats/release-notes/v25.2.5">v25.2.5</a></li><li><a href="/java-file-formats/release-notes/v25.2.4">v25.2.4</a></li><li><a href="/java-file-formats/release-notes/v25.1.42">v25.1.42</a></li><li><a href="/java-file-formats/release-notes/v25.1.41">v25.1.41</a></li><li><a href="/java-file-formats/release-notes/v25.1.40">v25.1.40</a></li><li><a href="/java-file-formats/release-notes/v25.1.39">v25.1.39</a></li><li><a href="/java-file-formats/release-notes/v25.1.38">v25.1.38</a></li><li><a href="/java-file-formats/release-notes/v25.1.37">v25.1.37</a></li></ul></li><li><a href="/java-file-formats/release-notes/v24.2.3">v24.2.3 Service Pack Release</a></li><li><a href="/java-file-formats/release-notes/v25.1.35">v25.1.35 Main Release</a></li></ul></li>
diff --git a/java-file-formats/Release-notes/v31.1.20.md b/java-file-formats/Release-notes/v31.1.20.md
new file mode 100644
index 0000000..d9f149d
--- /dev/null
+++ b/java-file-formats/Release-notes/v31.1.20.md
@@ -0,0 +1,22 @@
+---
+title: Essential Studio® for File Formats Java Release Notes  - v31.1.20
+description: Learn here about Essential Studio® for File Formats Java Weekly Nuget Release - Release Notes - v31.1.20
+platform: java-file-formats
+documentation: ug
+---
+
+# Essential Studio® for File Formats Java - v31.1.20 Release Notes
+
+{% include release-info.html date="September 17, 2025"  version="v31.1.20" passed="257220" failed="1" %}
+
+{% directory path: _includes/release-notes/v31.1.20 %}
+
+{% include {{file.url}} %}
+
+{% enddirectory %}
+
+## Test Results
+
+| Component Name | Test Cases | Passed | Failed | Remarks |
+|---------------|------------|--------|--------|---------|
+| DocIO | 4079 | 4079 | 0 | All Passed |
\ No newline at end of file