diff --git a/lib/config.tmpl b/lib/config.tmpl
index ea9a079483407cca47775eefa1b189ffa3bc0020_bGliL2NvbmZpZy50bXBs..8a180f3cea355868d47d60e0b724a0dc16457d79_bGliL2NvbmZpZy50bXBs 100644
--- a/lib/config.tmpl
+++ b/lib/config.tmpl
@@ -26,7 +26,7 @@
 [% download_mac_mb = 34 %]
 
 [% betabaseversion = '2.12' %]
-[% betabetaversion = '3' %]
+[% betabetaversion = '4' %]
 [% betaversion = "${betabaseversion}b${betabetaversion}" %]
 [% betaname = "SeaMonkey ${betabaseversion} Beta ${betabetaversion}" %]
 
diff --git a/lib/sitemap.xml b/lib/sitemap.xml
index ea9a079483407cca47775eefa1b189ffa3bc0020_bGliL3NpdGVtYXAueG1s..8a180f3cea355868d47d60e0b724a0dc16457d79_bGliL3NpdGVtYXAueG1s 100644
--- a/lib/sitemap.xml
+++ b/lib/sitemap.xml
@@ -13,8 +13,8 @@
   <page url="news" title="News" id="news" />
 
   <page url="releases/" title="Download and Releases" id="releases">
-    <page url="releases/2.12b3" title="2.12 Beta 3" id="2.12b3" hide="false">
+    <page url="releases/2.12b4" title="2.12 Beta 4" id="2.12b4" hide="false">
       <page url="releases/seamonkey2.12/" title="Release Notes" id="seamonkey2.12">
         <page url="releases/seamonkey2.12/changes" title="What's New" id="seamonkey2.12-changes" />
       </page>
     </page>
@@ -17,7 +17,8 @@
       <page url="releases/seamonkey2.12/" title="Release Notes" id="seamonkey2.12">
         <page url="releases/seamonkey2.12/changes" title="What's New" id="seamonkey2.12-changes" />
       </page>
     </page>
+    <page url="releases/2.12b3" title="2.12 Beta 3" id="2.12b3" hide="true" />
     <page url="releases/2.12b2" title="2.12 Beta 2" id="2.12b2" hide="true" />
     <page url="releases/2.12b1" title="2.12 Beta 1" id="2.12b1" hide="true" />
     <page url="releases/2.11" title="2.11" id="2.11" hide="false">
diff --git a/src/news.en.xml b/src/news.en.xml
index ea9a079483407cca47775eefa1b189ffa3bc0020_c3JjL25ld3MuZW4ueG1s..8a180f3cea355868d47d60e0b724a0dc16457d79_c3JjL25ld3MuZW4ueG1s 100644
--- a/src/news.en.xml
+++ b/src/news.en.xml
@@ -7,7 +7,20 @@
 -->
 
 <newsfeed title="SeaMonkey News" url="http://seamonkey-project.org/news">
-  <entry id="2012-08-03" showfront="true">
+  <entry id="2012-08-11" showfront="true">
+    <headline>SeaMonkey 2.12 Beta 4</headline>
+    <content type="html" xml:lang="en">
+<![CDATA[<p>
+SeaMonkey 2.12 Beta 4 is
+<a href="http://www.seamonkey-project.org/releases/2.12b4">now available
+for free download</a> on the SeaMonkey website. We encourage testers to
+<a href="http://www.seamonkey-project.org/dev/get-involved">get involved</a> in
+discussing and reporting problems as well as further improving the product.
+</p>]]>
+    </content>
+  </entry>
+
+  <entry id="2012-08-03" showfront="false">
     <headline>SeaMonkey 2.12 Beta 3</headline>
     <content type="html" xml:lang="en">
 <![CDATA[<p>
diff --git a/src/releases/2.12b3.en.html b/src/releases/2.12b3.en.html
index ea9a079483407cca47775eefa1b189ffa3bc0020_c3JjL3JlbGVhc2VzLzIuMTJiMy5lbi5odG1s..8a180f3cea355868d47d60e0b724a0dc16457d79_c3JjL3JlbGVhc2VzLzIuMTJiMy5lbi5odG1s 100755
--- a/src/releases/2.12b3.en.html
+++ b/src/releases/2.12b3.en.html
@@ -2,7 +2,7 @@
 [%- smversion = '2.12b3' -%]
 [%- prettyversion = '2.12 Beta 3' -%]
 [%- relnoteversion = '2.12' -%]
-[%- mirrorred = true -%]
+[%- mirrorred = false -%]
 [%- uselongversion = false -%]
 [%- releasedate = "August 3, 2012" -%]
 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
@@ -24,10 +24,10 @@
 <p class="release-date">Released [% releasedate %]</p>
 
 <div class="important">
-  <strong class="shout">Be careful!</strong> The SeaMonkey version available for
-  download on this page is a testing-only preview of the next generation of our
-  Internet suite. Please test it carefully, it's not yet in a state where we can
-  encourage you to use it for daily browsing and mail operations.
+  <strong class="very-strong shout">Warning!</strong> The SeaMonkey version
+  available for download on this page is an outdated testing-only preview of
+  the next generation of our Internet suite. Please test a
+  <a href="[% betaversion %]">newer preview version</a> instead of this one.
   <br>For daily use, we strongly advise you to download the
   <a href="./">current stable release</a> instead.
 </div>
diff --git a/src/releases/index.en.html b/src/releases/index.en.html
index ea9a079483407cca47775eefa1b189ffa3bc0020_c3JjL3JlbGVhc2VzL2luZGV4LmVuLmh0bWw=..8a180f3cea355868d47d60e0b724a0dc16457d79_c3JjL3JlbGVhc2VzL2luZGV4LmVuLmh0bWw= 100644
--- a/src/releases/index.en.html
+++ b/src/releases/index.en.html
@@ -5,7 +5,7 @@
 [%- mirrorred = true -%]
 [%- uselongversion = false -%]
 [%- releasedate = "July 17, 2012" -%]
-[%- betareleasedate = "August 3, 2012" -%]
+[%- betareleasedate = "August 11, 2012" -%]
 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
 <html lang="en">
 <head>
@@ -458,7 +458,8 @@
 <div class="para" id="old">
   <p>Previously released versions of SeaMonkey:</p>
   <ul class="snav">
-    <!--<li><a href="2.12b3">2.12 Beta 3</a></li>-->
+    <!--<li><a href="2.12b4">2.12 Beta 4</a></li>-->
+    <li><a href="2.12b3">2.12 Beta 3</a></li>
     <li><a href="2.12b2">2.12 Beta 2</a></li>
     <li><a href="2.12b1">2.12 Beta 1</a></li>
     <!--<li><a href="2.11">2.11</a></li>-->
diff --git a/src/releases/seamonkey2.12/changes.en.html b/src/releases/seamonkey2.12/changes.en.html
index ea9a079483407cca47775eefa1b189ffa3bc0020_c3JjL3JlbGVhc2VzL3NlYW1vbmtleTIuMTIvY2hhbmdlcy5lbi5odG1s..8a180f3cea355868d47d60e0b724a0dc16457d79_c3JjL3JlbGVhc2VzL3NlYW1vbmtleTIuMTIvY2hhbmdlcy5lbi5odG1s 100755
--- a/src/releases/seamonkey2.12/changes.en.html
+++ b/src/releases/seamonkey2.12/changes.en.html
@@ -28,6 +28,7 @@
   <li><a href="#new">New Features and Fixes</a>
     <ul>
       <li><a href="#major">Major Changes</a></li>
+      <li><a href="#fixesB4">Fixes in Beta 4</a></li>
       <li><a href="#fixesB3">Fixes in Beta 3</a></li>
       <li><a href="#fixesB2">Fixes in Beta 2</a></li>
       <li><a href="#featuresB1">Features in Beta 1</a></li>
@@ -49,6 +50,13 @@
 </div>
 
 <div class="fieldset">
+<span class="legend" id="fixesB4">Fixes in Beta 4</span>
+<ul>
+  <li>None.</li>
+</ul>
+</div>
+
+<div class="fieldset">
 <span class="legend" id="fixesB3">Fixes in Beta 3</span>
 <ul>
   <li>The Site Navigation Bar missed its tooltip when minimized (<a
diff --git a/src/releases/seamonkey2.12/relnote.var b/src/releases/seamonkey2.12/relnote.var
index ea9a079483407cca47775eefa1b189ffa3bc0020_c3JjL3JlbGVhc2VzL3NlYW1vbmtleTIuMTIvcmVsbm90ZS52YXI=..8a180f3cea355868d47d60e0b724a0dc16457d79_c3JjL3JlbGVhc2VzL3NlYW1vbmtleTIuMTIvcmVsbm90ZS52YXI= 100755
--- a/src/releases/seamonkey2.12/relnote.var
+++ b/src/releases/seamonkey2.12/relnote.var
@@ -1,7 +1,7 @@
 [%- rnote.baseversion = "2.12" -%]
 [%- rnote.basename = "SeaMonkey 2.12" -%]
-[%- rnote.version = "2.12b3" -%]
-[%- rnote.name = "SeaMonkey 2.12 Beta 3" -%]
+[%- rnote.version = "2.12b4" -%]
+[%- rnote.name = "SeaMonkey 2.12 Beta 4" -%]
 [%- rnote.relativeto.version = "2.11" -%]
 [%- rnote.relativeto.name = "SeaMonkey 2.11" -%]
 [%- rnote.relativeto.stable.version = "2.11" -%]