diff --git a/core/src/main/java/hudson/Functions.java b/core/src/main/java/hudson/Functions.java
index b0ee23761d..8cf85f81e9 100644
--- a/core/src/main/java/hudson/Functions.java
+++ b/core/src/main/java/hudson/Functions.java
@@ -27,6 +27,8 @@ package hudson;
 
 import hudson.model.Slave;
 import hudson.security.*;
+
+import java.text.SimpleDateFormat;
 import java.util.function.Predicate;
 import jenkins.util.SystemProperties;
 import hudson.cli.CLICommand;
@@ -219,10 +221,36 @@ public class Functions {
         return Util.XS_DATETIME_FORMATTER.format(cal.getTime());
     }
 
+    @Restricted(NoExternalUse.class)
+    public static String iso8601DateTime(Date date) {
+        return Util.XS_DATETIME_FORMATTER.format(date);
+    }
+
+    /**
+     * Returns a localized string for the specified date, not including time.
+     * @param date
+     * @return
+     */
+    @Restricted(NoExternalUse.class)
+    public static String localDate(Date date) {
+        return SimpleDateFormat.getDateInstance(SimpleDateFormat.SHORT).format(date);
+    }
+
     public static String rfc822Date(Calendar cal) {
         return Util.RFC822_DATETIME_FORMATTER.format(cal.getTime());
     }
 
+    /**
+     * Returns a human-readable string describing the time difference between now and the specified date.
+     *
+     * @param date
+     * @return
+     */
+    @Restricted(NoExternalUse.class)
+    public static String getTimeSpanString(Date date) {
+        return Util.getTimeSpanString(Math.abs(date.getTime() - new Date().getTime()));
+    }
+
     /**
      * During Jenkins start-up, before {@link InitMilestone#PLUGINS_STARTED} the extensions lists will be empty
      * and they are not guaranteed to be fully populated until after {@link InitMilestone#EXTENSIONS_AUGMENTED},
diff --git a/core/src/main/java/hudson/model/UpdateSite.java b/core/src/main/java/hudson/model/UpdateSite.java
index f0fd153ed6..58a3c2f2bc 100644
--- a/core/src/main/java/hudson/model/UpdateSite.java
+++ b/core/src/main/java/hudson/model/UpdateSite.java
@@ -43,8 +43,10 @@ import java.io.IOException;
 import java.net.URI;
 import java.net.URL;
 import java.net.URLEncoder;
+import java.time.Instant;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.Date;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Locale;
@@ -1019,6 +1021,13 @@ public class UpdateSite {
          */
         private Set<Plugin> incompatibleParentPlugins;
 
+        /**
+         * Date when this plugin was released.
+         * @since TODO
+         */
+        @Exported
+        public final Date releaseTimestamp;
+
         @DataBoundConstructor
         public Plugin(String sourceId, JSONObject o) {
             super(sourceId, o, UpdateSite.this.url);
@@ -1028,6 +1037,16 @@ public class UpdateSite {
             this.compatibleSinceVersion = Util.intern(get(o,"compatibleSinceVersion"));
             this.minimumJavaVersion = Util.intern(get(o, "minimumJavaVersion"));
             this.requiredCore = Util.intern(get(o,"requiredCore"));
+            final String releaseTimestamp = get(o, "releaseTimestamp");
+            Date date = null;
+            if (releaseTimestamp != null) {
+                try {
+                    date = Date.from(Instant.parse(releaseTimestamp));
+                } catch (Exception ex) {
+                    LOGGER.log(Level.FINE, "Failed to parse releaseTimestamp for " + title + " from " + sourceId, ex);
+                }
+            }
+            this.releaseTimestamp = date;
             this.categories = o.has("labels") ? internInPlace((String[])o.getJSONArray("labels").toArray(EMPTY_STRING_ARRAY)) : null;
             JSONArray ja = o.getJSONArray("dependencies");
             int depCount = (int)(ja.stream().filter(IS_DEP_PREDICATE.and(IS_NOT_OPTIONAL)).count());
diff --git a/core/src/main/resources/hudson/PluginManager/_table.css b/core/src/main/resources/hudson/PluginManager/_table.css
index 626282f69e..4fc5eb51a1 100644
--- a/core/src/main/resources/hudson/PluginManager/_table.css
+++ b/core/src/main/resources/hudson/PluginManager/_table.css
@@ -4,6 +4,10 @@
     width: 15em;
 }
 
+time {
+    white-space: nowrap;
+}
+
 #filter-container {
     margin: 1em;
     text-align: right;
diff --git a/core/src/main/resources/hudson/PluginManager/table.jelly b/core/src/main/resources/hudson/PluginManager/table.jelly
index f5abf90b4b..abf956d516 100644
--- a/core/src/main/resources/hudson/PluginManager/table.jelly
+++ b/core/src/main/resources/hudson/PluginManager/table.jelly
@@ -30,7 +30,7 @@ THE SOFTWARE.
      page: page name to be passed to local:tabBar
 -->
 <?jelly escape-by-default='true'?>
-<j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form">
+<j:jelly xmlns:j="jelly:core" xmlns:st="jelly:stapler" xmlns:d="jelly:define" xmlns:l="/lib/layout" xmlns:t="/lib/hudson" xmlns:f="/lib/form" xmlns:i="jelly:fmt">
   <l:layout title="${%Update Center}" permission="${app.ADMINISTER}">
     <st:include page="sidepanel.jelly"/>
     <l:main-panel>
@@ -52,6 +52,7 @@ THE SOFTWARE.
                   width="32">${%Install}</th>
               <th initialSortDir="${isUpdates?'down':null}">${%Name}</th>
               <th>${%Version}</th>
+              <th>${%Released}</th>
               <j:if test="${isUpdates}"><th>${%Installed}</th></j:if>
             </tr>
             <j:choose>
@@ -132,6 +133,13 @@ THE SOFTWARE.
                       </j:if>
                     </td>
                     <td class="pane"><st:out value="${p.version}" /></td>
+                    <td class="pane" data="${p.releaseTimestamp.time}">
+                      <j:if test="${p.releaseTimestamp != null}">
+                        <time datetime="${h.iso8601DateTime(p.releaseTimestamp)}" tooltip="${h.localDate(p.releaseTimestamp)}">
+                          ${%ago(h.getTimeSpanString(p.releaseTimestamp))}
+                        </time>
+                      </j:if>
+                    </td>
                     <j:if test="${isUpdates}">
                       <td class="pane">
                         <j:choose><j:when test="${p.installed.active}">
diff --git a/core/src/main/resources/hudson/PluginManager/table.properties b/core/src/main/resources/hudson/PluginManager/table.properties
index e2297fdde1..15e7cdeb33 100644
--- a/core/src/main/resources/hudson/PluginManager/table.properties
+++ b/core/src/main/resources/hudson/PluginManager/table.properties
@@ -45,4 +45,4 @@ depJavaWarning=\
  and in turn loading this plugin will fail.
 securityWarning=\
   Warning: This plugin version may not be safe to use. Please review the following security notices:
-
+ago={0} ago