diff --git a/beta-appcast.xml b/beta-appcast.xml
index f521aba7..446560a9 100644
--- a/beta-appcast.xml
+++ b/beta-appcast.xml
@@ -3,18 +3,24 @@
 <title>Aerial</title>
   
 <item>
-<title>1.4.10beta3</title>
+<title>1.4.99beta1</title>
   <description>
           <![CDATA[
             <p>This is the beta feed!</p>
-            <ul>
-            <li>Tentative fix for right arrow doesn't skip all views when running multiple monitors and different Aerial on each monitor</li>
-            <li>Tentative fix for missing key eventsFix for the Power saving on low power option!</li></ul>
+<p>This beta makes pretty important changes for multiple monitor users. Please understand you may experience bugs and crashes. This will be the first of many beta on the road to 1.5.0.</p>
+
+<ul>
+<li>New Displays tab, Display selection is now independent from viewing mode (mirrored, etc). This tab includes a visualisation of your current setup (mirroring what you see in System Preferences > Displays) 🎉</li>
+<li>You can now manually select the screens you want to use in Aerial (see this issue :  https://github.com/JohnCoates/Aerial/issues/732) 🎉🎉</li>
+<li>You can now span an Aerial on your selection of screen (see this issue : https://github.com/JohnCoates/Aerial/issues/194) 🎉🎉🎉</li>
+</ul>
+
+<p>Please report any bug you find !</p>            
           ]]>
     </description>
-<pubDate>mar., 7 mai. 2019 18:50:29 +0100</pubDate>
+<pubDate>ven., 10 mai. 2019 18:10:29 +0100</pubDate>
 <sparkle:minimumSystemVersion>10.9</sparkle:minimumSystemVersion>
-<enclosure url="https://github.com/JohnCoates/Aerial/releases/download/v1.4.10beta3/Aerial.saver.zip" sparkle:version="1.4.10beta3" sparkle:shortVersionString="1.4.10beta3"  sparkle:edSignature="8FJBzgnhi63SLcKlYCOhpd7QTbQUolAooJP7giUP3KlZNi0CzfllcRpZ8LOCRDd8L0de4J1pauGir39SsnOkDw==" length="5682008" type="application/octet-stream"/>
+<enclosure url="https://github.com/JohnCoates/Aerial/releases/download/v1.4.99beta1/Aerial.saver.zip" sparkle:version="1.4.99beta1" sparkle:shortVersionString="1.4.99beta1"  sparkle:edSignature="66YGllQexeWvqcMs10JB68/Emafi4vWjBm9QySNe3gd4K769QNHx3dAw3P3jm37LYwF20mNiT1MrTQ7rbCV/BQ==" length="5809227" type="application/octet-stream"/>
 </item>
 
 <item>