Start release notes for 3.0

Change-Id: I042fe036bb7c1196b7bde063a7fe5e8e43b7ac39
diff --git a/pages/site/releases/3.0.md b/pages/site/releases/3.0.md
new file mode 100644
index 0000000..7590b7d
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+++ b/pages/site/releases/3.0.md
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+---
+title: "Gerrit 3.0 Release (In development)"
+permalink: 3.0.html
+hide_sidebar: true
+hide_navtoggle: true
+toc: true
+---
+
+## Release Highlights
+
+## Important Notes
+
+### Schema Changes
+
+This release contains schema changes. To upgrade:
+
+``` sh
+  java -jar gerrit.war init -d site_path
+```
+
+## New Features
+
+## Dependency Updates
+
+## Plugin API changes
diff --git a/pages/site/releases/README.md b/pages/site/releases/README.md
index ad5a408..fc2e99c 100644
--- a/pages/site/releases/README.md
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@@ -18,6 +18,10 @@
 
 Latest release: **[2.15](/2.15.md)**.
 
+## 3.0 *(In development)*
+
+[Release notes for Gerrit 3.0](/3.0.md)
+
 ## 2.16 *(In development)*
 
 * GWT UI is deprecated