blog: v6 announcement (#4598)

* blog: v6 announcement

* update

website/src/_includes/blog_previews/20240814.html

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+<p><strong>SimpleX Chat vision and funding 2.0:</strong> past, present, future.</p>
+
+<p class="mb-[12px]">Announcing the investment from Jack Dorsey and Asymmetric.</p>
+
+<p><strong>v6.0 is released:</strong></p>
+
+<ul class="mb-[12px]">
+    <li>Private message routing - enabled by default</li>
+    <li>
+        <p>New chat experience:</p>
+        <ul>
+            <li>connect to your friends faster.</li>
+            <li>new reachable interface.</li>
+            <li>and much more!</li>
+        </ul>
+    </li>
+    <li>Improved networking and battery usage</li>
+</ul>