diff --git a/assets/main.coffee b/assets/main.coffee
index d2b9a5a..bf08c87 100644
--- a/assets/main.coffee
+++ b/assets/main.coffee
@@ -34,8 +34,39 @@ document.addEventListener 'DOMContentLoaded', (event) ->
         ref = event.target.parentNode.dataset.ref
         ver = event.target.innerText
 
+        meta = window.metadata[ref]
+        #console.log("Meta: %o", meta)
+        vermeta = meta['versions'][ver]
+
+        if vermeta['FULL'].length > 0
+            fullmeta = vermeta['FULL'][0]
+            fullInfo = "✔️ (first released: #{fullmeta['published_first']})"
+        else
+            fullInfo = "❌"
+
+        if vermeta['OTA'].length > 0
+            fromList = (v['fv'] for v in vermeta['OTA'])
+            fromList = fromList.join ', '
+            otaInfo = "✔️ (from #{fromList})"
+        else
+            otaInfo = "❌"
+
+        if vermeta['OTA_FROM'].length > 0
+            toList = (v['tv'] for v in vermeta['OTA_FROM'])
+            toList = toList.join ', '
+            updateInfo = "<strong>OTA possible to #{toList}</strong>"
+        else
+            updateInfo = "No further OTA update."
+
         tt_title.innerHTML = ver
-        tt_text.innerHTML  = "for #{ref}"
+        tt_text.innerHTML  = """
+            for #{ref} - #{meta['variant']}<br/>
+            <br/>
+            FULL: #{fullInfo}<br/>
+            OTA: #{otaInfo}<br/>
+            <br/>
+            #{updateInfo}
+        """
 
 
         # Show tooltip
@@ -71,11 +102,27 @@ document.addEventListener 'DOMContentLoaded', (event) ->
             # show tooltip right of cursor
             tooltip.style.left = (mouseX + cursorOffset) + 'px'
 
-    versionitems = document.querySelectorAll '.version'
-    for vi in versionitems
-        vi.addEventListener 'mousemove', (event) ->
-            positionTooltip event.clientX + window.scrollX, event.clientY + window.scrollY
-        vi.addEventListener 'mouseover', (event) ->
-            showTooltip event
-        vi.addEventListener 'mouseout', (event) ->
-            document.querySelector('#tooltip').style.display = 'none'
+    # Load metadata
+    metadata = {}
+    xhr = new XMLHttpRequest()
+    xhr.open('GET', 'json_updatedetails.php', true);
+    xhr.onreadystatechange = ->
+        if xhr.readyState is 4 and xhr.status is 200
+            window.metadata = JSON.parse xhr.responseText
+
+            # Add event listeners to all versions so tooltips start to work AFTER data was loaded
+            versionitems = document.querySelectorAll '.version'
+            for vi in versionitems
+                vi.addEventListener 'mousemove', (event) ->
+                    positionTooltip event.clientX + window.scrollX, event.clientY + window.scrollY
+                vi.addEventListener 'mouseover', (event) ->
+                    showTooltip event
+                vi.addEventListener 'mouseout', (event) ->
+                    document.querySelector('#tooltip').style.display = 'none'
+
+            snackbar = new mdc.snackbar.MDCSnackbar document.querySelector '.mdc-snackbar'
+            snackbar.show
+                message: 'Update details loaded. Hover a version number to see details.'
+                timeout: 5000
+
+    xhr.send()
diff --git a/index_main.php b/index_main.php
index f6718eb..c9dabe2 100644
--- a/index_main.php
+++ b/index_main.php
@@ -99,6 +99,14 @@ foreach ($allVars as $family => $models) {
         Contents here.
       </section>
     </div>
+
+    <div class="mdc-snackbar" aria-live="assertive" aria-atomic="true" aria-hidden="true">
+      <div class="mdc-snackbar__text"></div>
+      <div class="mdc-snackbar__action-wrapper">
+        <button type="button" class="mdc-snackbar__action-button"></button>
+      </div>
+    </div>
+
   </main>
 </body>
 </html>
diff --git a/json_updatedetails.php b/json_updatedetails.php
new file mode 100644
index 0000000..cf6470d
--- /dev/null
+++ b/json_updatedetails.php
@@ -0,0 +1,53 @@
+<?php
+
+require_once __DIR__ . '/lib/autoloader.php';
+
+use \TclUpdates\SQLiteReader;
+
+$db = new SQLiteReader();
+
+$refs = $db->getAllRefs();
+$vars = $db->getAllVariantsFlat();
+
+$output = array();
+foreach ($refs as $ref) {
+    $updates = $db->getAllUpdates($ref);
+
+    $versions = array();
+    foreach ($updates as $update) {
+        $fv = $update['fv'];
+        $tv = $update['tv'];
+        $update['note'] = json_decode($update['note'], true);
+        $similar_refs = $db->getAllRefsForFile($update['file_sha1']);
+        $update['applies_to'] = $similar_refs;
+        if ($fv && !isset($versions[$fv])) {
+            $versions[$fv] = array('OTA_FROM' => array(), 'OTA' => array(), 'FULL' => array());
+        }
+        if (!isset($versions[$tv])) {
+            $versions[$tv] = array('OTA_FROM' => array(), 'OTA' => array(), 'FULL' => array());
+        }
+        if (!$update['fv']) {
+            $versions[$tv]['FULL'][] = $update;
+        } else {
+            $versions[$fv]['OTA_FROM'][] = $update;
+            $versions[$tv]['OTA'][] = $update;
+        }
+    }
+
+    $output[$ref] = array(
+        'curef' => $ref,
+        'variant' => $vars[$ref],
+        'versions' => $versions,
+    );
+}
+
+header('Content-Type: text/json');
+
+$output = json_encode($output, JSON_PRETTY_PRINT);
+if (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== false) {
+    ini_set('zlib.output_compression', 'Off');
+    header('Content-Encoding: gzip');
+    $output = gzencode($output);
+}
+
+echo $output;
diff --git a/lib/TclUpdates/SQLiteReader.php b/lib/TclUpdates/SQLiteReader.php
index 92dfd42..abfa3ba 100644
--- a/lib/TclUpdates/SQLiteReader.php
+++ b/lib/TclUpdates/SQLiteReader.php
@@ -168,4 +168,17 @@ class SQLiteReader
         sort($version);
         return $version;
     }
+
+    public function getAllRefsForFile($sha1)
+    {
+        $sql = 'SELECT curef FROM updates u WHERE u.file_sha1=?';
+        $stmt = $this->pdo->prepare($sql);
+        $ok = $stmt->execute(array($sha1));
+        $result = $stmt->fetchAll(\PDO::FETCH_ASSOC);
+        $refs = array();
+        foreach ($result as $row) {
+            $refs[] = $row['curef'];
+        }
+        return $refs;
+    }
 }