what's new in 24.3 beta (#811)

Co-authored-by: Kat Batuigas <36839689+kbatuigas@users.noreply.github.com>
Co-authored-by: Jake Cahill <45230295+JakeSCahill@users.noreply.github.com>
Co-authored-by: Paulo Borges <paulohtb@hotmail.com>
Co-authored-by: Gellért Peresztegi-Nagy <pereszteginagy.gellert@gmail.com>
Co-authored-by: Angela Simms <102690377+asimms41@users.noreply.github.com>

Author: 6 people

modules/get-started/pages/whats-new.adoc

@@ -7,15 +7,27 @@ This topic includes new content added in version {page-component-version}. For a
 * xref:redpanda-cloud:get-started:whats-new-cloud.adoc[] 
 * xref:redpanda-cloud:get-started:cloud-overview.adoc#redpanda-cloud-vs-self-managed-feature-compatibility[Redpanda Cloud vs Self-Managed feature compatibility]
 
+== Mountable topics
+
+For topics with Tiered Storage enabled, you can unmount a topic to safely detach it from a cluster and keep the topic data in the cluster's object storage bucket or container. You can mount the detached topic to either the same origin cluster, or a different one. This allows you to hibernate a topic and free up system resources taken up by the topic, or migrate a topic to a different cluster. See xref:manage:mountable-topics.adoc[Mountable topics] for details.
+
+== Leader pinning
+
+For a Redpanda cluster deployed across multiple availability zones (AZs), xref:develop:produce-data/leader-pinning.adoc[leader pinning] ensures that a topic's partition leaders are geographically closer to clients. Leader pinning can lower networking costs and help guarantee lower latency by routing produce and consume requests to brokers located in certain AZs.
+
+== Debug bundles in Redpanda Console
+
+You can now xref:troubleshoot:debug-bundle/index.adoc[generate a debug bundle] in Redpanda Console for comprehensive diagnostics. A debug bundle can help debug and diagnose issues with a Redpanda cluster, a broker, or the machines on which the brokers are running. You can use this file to debug issues yourself, or you can send it to the Redpanda support team to help resolve your issue.
+
 == Declarative user and ACL management in Kubernetes
 
-Redpanda now supports declarative management of users and access control lists (ACLs) using the new User resource with the Redpanda Operator. This feature allows you to:
+Redpanda now supports declarative management of users and access control lists (ACLs) using the new User custom resource with the Redpanda Operator. This feature allows you to:
 
 - Create and manage Redpanda users and their authentication settings.
 - Define and manage ACLs to control access to Redpanda resources.
 - Automatically reconcile changes to users and ACLs using the Redpanda Operator.
 
-To learn more, see the xref:manage:kubernetes/security/authentication/k-user-controller.adoc[User resource documentation].
+To learn more, see the xref:manage:kubernetes/security/authentication/k-user-controller.adoc[User custom resource documentation].
 
 == Licensing updates
 
@@ -29,3 +41,20 @@ This release includes several updates to xref:get-started:licensing/overview.ado
 
 - *Unified license management in Redpanda Console*: You can now upload and apply a single license key for both Redpanda Console and the connected Redpanda cluster through the Redpanda Console UI. Any existing license key is overridden by the new one.
 
+== New commands 
+
+The following `rpk` commands are new in this version:
+
+* xref:reference:rpk/rpk-cluster/rpk-cluster-storage-cancel-mount.adoc[`rpk cluster storage cancel mount`]
+* xref:reference:rpk/rpk-cluster/rpk-cluster-storage-list-mount.adoc[`rpk cluster storage list mount`]
+* xref:reference:rpk/rpk-cluster/rpk-cluster-storage-list-mountable.adoc[`rpk cluster storage list-mountable`]
+* xref:reference:rpk/rpk-cluster/rpk-cluster-storage-mount.adoc[`rpk cluster storage mount`]
+* xref:reference:rpk/rpk-cluster/rpk-cluster-storage-status-mount.adoc[`rpk cluster storage status mount`]
+* xref:reference:rpk/rpk-cluster/rpk-cluster-storage-unmount.adoc[`rpk cluster storage unmount`]
+
+== New properties
+
+The following cluster properties are new in this version:
+
+* xref:reference:properties/cluster-properties.adoc#default_leaders_preference[`default_leaders_preference`]
+* xref:reference:properties/cluster-properties.adoc#rpk_path[`rpk_path`]