Merge pull request #206 from nginx/internal/nim-release-2.0-rns

docs: add 2.20 RNs

Author: travisamartin

content/nim/releases/release-notes.md

@@ -17,11 +17,86 @@ The release notes for F5 NGINX Instance Manager highlight the latest features, i
 </details>
 
 
+---
+
+## 2.20.0
+
+June 16, 2025
+
+### Upgrade Paths {#2-20-0-upgrade-paths}
+
+NGINX Instance Manager 2.20.0 supports upgrades from these previous versions:
+
+- 2.17.0 - 2.19.2
+
+If your NGINX Instance Manager version is older, you may need to upgrade to an intermediate version before upgrading to the target version.
+
+### What's New{#2-20-0-whats-new}
+This release includes the following updates:
+
+- {{% icon-feature %}} **Added support to report on multiple NGINX One subscriptions using a single instance of NGINX Instance Manager**<a name="2-20-0-whats-new-Added-support-to-report-on-multiple-NGINX-One-subscriptions-using-a-single-instance-of-NGINX-Instance-Manager"></a>
+
+   Customers can have multiple NGINX One subscriptions or licenses with different attributes (prod, nonprod, etc.). Now a single NGINX Instance Manager can receive usage from these instances and send a bulk usage report to F5.
+
+  We also simplified the licensing process for disconnected use cases. When running NGINX Instance Manager in disconnected mode, all features are enabled for 90 days when a JWT is uploaded. Customers have these 90 days to send the first usage report to activate the NGINX Instance Manager license.
+
+- {{% icon-feature %}} **Introducing lightweight mode**<a name="2-20-0-whats-new-Introducing-lightweight-mode"></a>
+
+   NGINX Instance Manager can now run in lightweight mode without the ClickHouse database dependency. This mode requires fewer resources and is perfect for customers who don’t need metrics-related functionality. It supports basic use cases such as:
+
+  - Fleet management
+  - WAF configuration
+  - Usage tracking
+  - Certificate management
+  - Template automation
+
+- {{% icon-feature %}} **Improved web analytics sent to F5**<a name="2-20-0-whats-new-Improved-web-analytics-sent-to-F5"></a>
+
+   NGINX Instance Manager now sends improved web analytics to F5. This helps F5 understand common use cases of NGINX Instance Manager and improve functionality.
+
+
+### Changes in Default Behavior{#2-20-0-changes-in-behavior}
+This release has the following changes in default behavior:
+
+- {{% icon-feature %}} **Breadcrumbs added for Overview, Manage, and Config templates**<a name="2-20-0-changes-in-behavior-Breadcrumbs-added-for-Overview,-Manage,-and-Config-templates"></a>
+
+  We have added breadcrumb navigation links for the "Overview", "Manage", and "Config" templates in the NGINX Instance Manager user interface.
+
+- {{% icon-feature %}} **Export instance groups to Excel**<a name="2-20-0-changes-in-behavior-Export-instance-groups-to-Excel"></a>
+
+  You can now export instance groups to a Microsoft Excel spreadsheet from the Instance Group section.
+
+- {{% icon-feature %}} **Export all instances functionality added**<a name="2-20-0-changes-in-behavior-Export-all-instances-functionality-added"></a>
+
+  NGINX Instance Manager’s export function only included currently visible instances, not the full list. Customers had to run separate exports and merge data manually.
+
+  An `Export All` button is now available under the Instances section. Clicking it downloads all instance details in a single Excel file.
+
+- {{% icon-feature %}} **Automatic feature enablement in disconnected instances on license upload**<a name="2-20-0-changes-in-behavior-Automatic-feature-enablement-in-disconnected-instances-on-license-upload"></a>
+
+
+  NGINX Instance Manager now enables all features by default when you upload a license to a disconnected instance. This update ensures customers can begin using the full capabilities of the system without additional configuration.
+
+  Customers have a 90-day window to complete the full license process. If they don’t complete it within this period, the instance is automatically deactivated.
+
+
+
+### Resolved Issues{#2-20-0-resolved-issues}
+
+This release fixes the following issues. Check the [Known Issues]({{< ref "/nim/releases/known-issues.md" >}}) topic for more information on the latest resolved issues. Use your browser's search function to find the issue ID in the page.
+
+- {{% icon-resolved %}} The certificate stats are not displayed correctly in the Certificates and Keys page as well as the Dashboard page. (45991)
+
+
+### Known Issues{#2-20-0-known-issues}
+
+You can find information about known issues in the [Known Issues]({{< ref "/nim/releases/known-issues.md" >}}) topic.
+
 ---
 
 ## 2.19.2
 
-May 08, 2025
+May 06, 2025
 
 ### Upgrade Paths {#2-19-2-upgrade-paths}
 
@@ -1357,7 +1432,7 @@ This release includes the following updates:
 
 - {{% icon-feature %}} **Track NGINX Plus usage over time**<a name="2-5-0-whats-new-Track-NGINX-Plus-usage-over-time"></a>
 
-   When viewing your NGINX Plus instances in the Instnace Manager web interface, you can set a date and time filter to review the [NGINX Plus instance count]({{< ref "/nim/admin-guide/report-usage-connected-deployment.md" >}}) for a specific period. Also, you can use the Instance Manager REST API to view the lowest, highest, and average number of NGINX Plus instances over time.
+   When viewing your NGINX Plus instances in the Instance Manager web interface, you can set a date and time filter to review the [NGINX Plus instance count]({{< ref "/nim/admin-guide/report-usage-connected-deployment.md" >}}) for a specific period. Also, you can use the Instance Manager REST API to view the lowest, highest, and average number of NGINX Plus instances over time.
 
 - {{% icon-feature %}} **New helm charts for each release of Instance Manager**<a name="2-5-0-whats-new-New-helm-charts-for-each-release-of-Instance-Manager"></a>