[Radar] Add homepage redesign changelog

src/content/changelog/radar/2026-10-23-radar-homepage-redesign.mdx

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+---
+title: Redesigned Cloudflare Radar homepage
+description: The Cloudflare Radar homepage now features an interactive map of traffic and outages, a curated insights section with tabbed navigation, and an updated interface built with Kumo components.
+products:
+  - radar
+date: 2026-10-23
+---
+
+The [**Cloudflare Radar**](/radar/) homepage has been redesigned to make global Internet data easier to explore for broader audiences, including journalists, policymakers, and everyday users, while preserving the depth that technical users rely on.
+
+![Animation scrolling through the redesigned Cloudflare Radar homepage](~/assets/images/radar/radar-homepage-redesign.gif)
+
+- **Interactive map**: Shows Internet traffic and outages around the world, and acts as a starting point for exploring specific countries and trends.
+- **Curated insights section**: Tabbed navigation that highlights summary statistics across Radar data, with a call to action to explore each area in depth.
+- **Updated interface**: Built with [Kumo](https://kumo-ui.com/) components, the same ones used across Cloudflare products.
+
+As we continue the redesign, all Radar pages will see improvements. Share feedback at radar@cloudflare.com.
+
+For more details, read the [blog post](https://blog.cloudflare.com/radar-redesign/) or visit [Cloudflare Radar](https://radar.cloudflare.com/).