[Analytics, Log Explorer] Add changelog for Custom Dashboards GA (#30209)

* [Analytics, Log Explorer] Add changelog for Custom Dashboards GA

* fixes

* Apply suggestion from @patriciasantaana

* Reverts previous commit

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Co-authored-by: Patricia Loraine Santa Ana <psantaana@cloudflare.com>
Co-authored-by: Patricia Santa Ana <103445940+patriciasantaana@users.noreply.github.com>

Author: jsells1

src/assets/images/analytics/customdashboardshome.jpg

@@ -0,0 +1,26 @@
+---
+title: Custom dashboards available to all customers
+description: Build custom dashboards using 100+ GraphQL datasets and raw Log Explorer data.
+products:
+  - analytics
+  - log-explorer
+date: 2026-04-22
+---
+
+Custom Dashboards are now available to all Cloudflare customers. Build personalized views that highlight the metrics most critical to your infrastructure and security posture, moving beyond standard product dashboards.
+
+This update significantly expands the data available for visualization. Build charts based on any of the **100+ datasets** available via the Cloudflare GraphQL API, covering everything from WAF events and Workers metrics to Load Balancing and Zero Trust logs.
+
+## Log Explorer integration
+
+For Log Explorer customers, you can now turn raw log queries directly into dashboard charts. When you identify a specific pattern or spike while investigating logs, save that query as a visualization to monitor those signals in real-time without leaving the dashboard.
+
+## Key benefits
+
+- **Unified visibility**: Consolidate signals from different Cloudflare products (for example, HTTP Traffic and R2 Storage) into a single view.
+- **Flexible monitoring**: Create charts that focus on specific status codes, ASN regions, or security actions that matter to your business.
+- **Expanded limits**: Log Explorer customers can create up to **100 dashboards** (up from 25 for standard customers).
+
+![Custom Dashboards home page showing dashboard list and chart previews](~/assets/images/analytics/customdashboardshome.jpg)
+
+To get started, refer to the [Custom Dashboards documentation](/analytics/custom-dashboards/).