doc current win64 version, mention possible ARM issues

source/downloads/index.html

@@ -48,9 +48,10 @@ <h3 class="trim-top">Installing from source</h3>
         <h3 class="trim-top">Rakudo Star 2017.04 Errata</h3>
 
         <ul class="shy-list">
-            <li>The original Windows MSI has been deleted due to issues. The replacement is named "rakudo-star-2017.04.1-x86_64 (JIT).msi".  This version needs Strawberry Perl installed.</li>
+            <li>The current Windows 64 binary version is named "rakudo-star-2017.04.2-x86_64 (JIT).msi".  This version should be free of the problems of the previous releases.</li>
             <li>Windows port: NativeCall modules, such as Linenoise, may not fully work depending on compiler (differs depending on whether mingw or MSVC and whether 32 or 64 bit).</li>
-            <li>Linux and Mac: no specific issues known currently</li>
+            <li>Linux and Mac: no specific issues known currently.</li>
+            <li>ARM issues have been reported and are under investigation.</li>
         </ul>
       </div>
     </div>