update DAC landings for Studio 2.2

Change-Id: I5ab5cb935ca058b543bd5751c3cdcc7cbf92a1dd
diff --git a/docs/html/develop/index.jd b/docs/html/develop/index.jd
index bd933f4..cee8327 100644
--- a/docs/html/develop/index.jd
+++ b/docs/html/develop/index.jd
@@ -14,24 +14,26 @@
   <div class="wrap">
     <div class="cols dac-hero-content">
       <div class="col-1of2 col-push-1of2 dac-hero-figure">
-        <img class="dac-hero-image" src="/images/develop/hero_image_studio5_2x.png" srcset="/images/develop/hero_image_studio5.png 1x, /images/develop/hero_image_studio5_2x.png 2x">
+        <img class="dac-hero-image" style="padding-top:32px"
+          src="/images/develop/hero-layout-editor_2x.png">
       </div>
       <div class="col-1of2 col-pull-1of2" style="margin-bottom:40px">
         <h1 class="dac-hero-title">
             <a style="color:inherit" href="{@docRoot}studio/index.html">
-            Android Studio 2.1,<br>now available!</a></h1>
+            Android Studio 2.2 <nobr>is here!</nobr></a></h1>
 
-<p class="dac-hero-description">Android Studio provides the fastest tools for
-building apps on every type of Android device.</p>
+<p class="dac-hero-description">The latest version of Android Studio includes a
+rewritten <b>layout editor</b> with the new constraint layout,
+helping you build rich UI with less work.</p>
 
-<p class="dac-hero-description">The latest version, Android Studio 2.1, adds
-support for N Preview development on top of the faster Android Emulator and
-Instant Run feature from 2.0.</p>
+
+<p class="dac-hero-description">With over a dozen new features, Android Studio
+2.2 helps you code faster and smarter.</p>
 
 <p style="margin-top:24px">
     <a class="dac-hero-cta" href="{@docRoot}studio/index.html">
       <span class="dac-sprite dac-auto-chevron"></span>
-      Get Android Studio
+      Get Android Studio 2.2
     </a>
   &nbsp;&nbsp;&nbsp;&nbsp;<wbr>
     <a class="dac-hero-cta" href="{@docRoot}studio/releases/index.html">