Make it clear that WinXP support is being discontinued.

Announce.txt

@@ -24,14 +24,11 @@ number of other platforms and is currently maintained by Stephen Anthony.
 This is the 6.0 release of Stella for Linux, macOS and Windows.  The
 distributions currently available are:
 
-  * Binaries for Windows XP_SP3(*)/Vista/7/8/10 :
+  * Binaries for Windows Vista/7/8/10 :
       Stella-6.0-win32.exe   (32-bit EXE installer)
       Stella-6.0-x64.exe     (64-bit EXE installer)
       Stella-6.0-windows.zip (32/64 bit versions)
 
-      (*) Note: Support for Windows XP is problematic on some systems,
-          and will probably be discontinued in a future release.
-
   * Binary distribution for macOS 10.7 and above :
       Stella-6.0-macos.dmg (64-bit Intel)
 

Changes.txt

@@ -18,6 +18,10 @@
           reset to defaults; if you had custom mappings, they will need to
           be re-entered again.
 
+  * Note2:Support for Windows XP has been discontinued as of this version.
+          WinXP is now completely out of support from Microsoft, so we
+          are doing the same.
+
   * Updated internal ROM properties database to ROM-Hunter version 15
     (thanks go to RomHunter for his tireless research in this area).
     Related to this, updated the snapshot collection.

docs/index.html

@@ -368,15 +368,12 @@
   <p>
   <h3><b><u>Windows</u></b></h3>
 
-  <p>The Windows version of Stella is designed to work on Windows XP_SP3(*)/Vista/7/8/10
+  <p>The Windows version of Stella is designed to work on Windows Vista/7/8/10
   with the following:</p>
 
   <ul>
     <li>Direct3D or OpenGL capable video card</li>
-    <li>64-bit port has been tested on Windows Vista and above only</li>
+    <li>Visual C++ 2017/2019 Community is required to compile the Stella source code</li>
-    <li>Visual C++ 2017 Community is required to compile the Stella source code</li>
-    <li>(*) Note: Support for Windows XP is problematic on some systems, and will
-        probably be discontinued in a future release</li>
   </ul>
 
   <p>