Update CHANGELOG.md for v1.3.0-beta.1.

CHANGELOG.md

 <!-- BEGIN MUNGE: GENERATED_TOC -->
 
+- [v1.3.0-beta.1](#v130-beta1)
+  - [Downloads](#downloads)
+  - [Changes since v1.3.0-alpha.5](#changes-since-v130-alpha5)
+    - [Action Required](#action-required)
+    - [Other notable changes](#other-notable-changes)
 - [v1.3.0-alpha.5](#v130-alpha5)
   - [Downloads](#downloads)
   - [Changes since v1.3.0-alpha.4](#changes-since-v130-alpha4)
@@ -61,6 +66,62 @@
 <!-- NEW RELEASE NOTES ENTRY -->
 
 
+# v1.3.0-beta.1
+
+[Documentation](http://kubernetes.github.io) & [Examples](http://releases.k8s.io/release-1.3/examples)
+
+## Downloads
+
+binary | sha1 hash | md5 hash
+------ | --------- | --------
+[kubernetes.tar.gz](https://storage.googleapis.com/kubernetes-release/release/v1.3.0-beta.1/kubernetes.tar.gz) | `2b54995ee8f52d78dc31c3d7291e8dfa5c809fe7` | `f1022a84c3441cae4ebe1d295470be8f`
+
+## Changes since v1.3.0-alpha.5
+
+### Action Required
+
+* Fixing logic to generate ExternalHost in genericapiserver ([#26796](https://github.com/kubernetes/kubernetes/pull/26796), [@nikhiljindal](https://github.com/nikhiljindal))
+* federation: Updating federation-controller-manager to use secret to get federation-apiserver's kubeconfig ([#26819](https://github.com/kubernetes/kubernetes/pull/26819), [@nikhiljindal](https://github.com/nikhiljindal))
+
+### Other notable changes
+
+* federation: fix dns provider initialization issues ([#27252](https://github.com/kubernetes/kubernetes/pull/27252), [@mfanjie](https://github.com/mfanjie))
+* Updating federation up scripts to work in non e2e setup ([#27260](https://github.com/kubernetes/kubernetes/pull/27260), [@nikhiljindal](https://github.com/nikhiljindal))
+* version bump for gci to milestone 53 ([#27210](https://github.com/kubernetes/kubernetes/pull/27210), [@adityakali](https://github.com/adityakali))
+* kubectl apply retry stale resource version ([#26557](https://github.com/kubernetes/kubernetes/pull/26557), [@AdoHe](https://github.com/AdoHe))
+* Revert "Wait for arc.getArchive() to complete before running tests" ([#27130](https://github.com/kubernetes/kubernetes/pull/27130), [@pwittrock](https://github.com/pwittrock))
+* ResourceQuota BestEffort scope aligned with Pod level QoS ([#26969](https://github.com/kubernetes/kubernetes/pull/26969), [@derekwaynecarr](https://github.com/derekwaynecarr))
+* AWS: cache instances during service reload to avoid rate limiting on restart ([#26900](https://github.com/kubernetes/kubernetes/pull/26900), [@therc](https://github.com/therc))
+* GCE provider: Log full contents of long operations ([#26962](https://github.com/kubernetes/kubernetes/pull/26962), [@zmerlynn](https://github.com/zmerlynn))
+* Fix system container detection ([#26586](https://github.com/kubernetes/kubernetes/pull/26586), [@derekwaynecarr](https://github.com/derekwaynecarr))
+* Added hpa/v1 generator to kubectl autoscale ([#26775](https://github.com/kubernetes/kubernetes/pull/26775), [@piosz](https://github.com/piosz))
+* federation: Adding dnsprovider flags to federation-controller-manager ([#27158](https://github.com/kubernetes/kubernetes/pull/27158), [@nikhiljindal](https://github.com/nikhiljindal))
+* federation service controller: fixing a bug so that existing services are created in newly registered clusters ([#27028](https://github.com/kubernetes/kubernetes/pull/27028), [@mfanjie](https://github.com/mfanjie))
+* Rename ENABLE_NODE_AUTOSCALER to ENABLE_CLUSTER_AUTOSCALER - part 2 ([#27117](https://github.com/kubernetes/kubernetes/pull/27117), [@mwielgus](https://github.com/mwielgus))
+* support for mounting local-ssds on GCI ([#27143](https://github.com/kubernetes/kubernetes/pull/27143), [@adityakali](https://github.com/adityakali))
+* AWS: support mixed plaintext/encrypted ports in ELBs via service.beta.kubernetes.io/aws-load-balancer-ssl-ports annotation ([#26976](https://github.com/kubernetes/kubernetes/pull/26976), [@therc](https://github.com/therc))
+* Updating e2e docs with instructions on running federation tests ([#27072](https://github.com/kubernetes/kubernetes/pull/27072), [@colhom](https://github.com/colhom))
+* LBaaS v2 Support for Openstack Cloud Provider Plugin ([#25987](https://github.com/kubernetes/kubernetes/pull/25987), [@dagnello](https://github.com/dagnello))
+* GCI: add support for network plugin ([#27027](https://github.com/kubernetes/kubernetes/pull/27027), [@andyzheng0831](https://github.com/andyzheng0831))
+* Bump cAdvisor to v0.23.3 ([#27065](https://github.com/kubernetes/kubernetes/pull/27065), [@timstclair](https://github.com/timstclair))
+* Stop 'kubectl drain' deleting pods with local storage. ([#26667](https://github.com/kubernetes/kubernetes/pull/26667), [@mml](https://github.com/mml))
+* Networking e2es: Wait for all nodes to be schedulable in kubeproxy and networking tests ([#27008](https://github.com/kubernetes/kubernetes/pull/27008), [@zmerlynn](https://github.com/zmerlynn))
+* change clientset of service controller to versioned ([#26694](https://github.com/kubernetes/kubernetes/pull/26694), [@mfanjie](https://github.com/mfanjie))
+* GCE: Enable using gcr.io as a Docker registry mirror. ([#25841](https://github.com/kubernetes/kubernetes/pull/25841), [@ojarjur](https://github.com/ojarjur))
+* correction on rbd volume object and defaults ([#25490](https://github.com/kubernetes/kubernetes/pull/25490), [@rootfs](https://github.com/rootfs))
+* Bump GCE debian image to container-v1-3-v20160604 ([#26851](https://github.com/kubernetes/kubernetes/pull/26851), [@zmerlynn](https://github.com/zmerlynn))
+* Option to enable http2 on client connections. ([#25280](https://github.com/kubernetes/kubernetes/pull/25280), [@timothysc](https://github.com/timothysc))
+* kubectl get ingress output remove rules ([#26684](https://github.com/kubernetes/kubernetes/pull/26684), [@AdoHe](https://github.com/AdoHe))
+* AWS kube-up: Remove SecurityContextDeny admission controller (to mirror GCE) ([#25381](https://github.com/kubernetes/kubernetes/pull/25381), [@zquestz](https://github.com/zquestz))
+* Fix third party ([#25894](https://github.com/kubernetes/kubernetes/pull/25894), [@brendandburns](https://github.com/brendandburns))
+* AWS Route53 dnsprovider ([#26049](https://github.com/kubernetes/kubernetes/pull/26049), [@quinton-hoole](https://github.com/quinton-hoole))
+* GCI/Trusty: support the Docker registry mirror ([#26745](https://github.com/kubernetes/kubernetes/pull/26745), [@andyzheng0831](https://github.com/andyzheng0831))
+* Attach/Detach Controller Kubelet Changes ([#26351](https://github.com/kubernetes/kubernetes/pull/26351), [@saad-ali](https://github.com/saad-ali))
+* Added DNS Reverse Record logic for service IPs ([#26226](https://github.com/kubernetes/kubernetes/pull/26226), [@ArtfulCoder](https://github.com/ArtfulCoder))
+* read gluster log to surface glusterfs plugin errors properly in describe events ([#24808](https://github.com/kubernetes/kubernetes/pull/24808), [@screeley44](https://github.com/screeley44))
+
+
+
 # v1.3.0-alpha.5
 
 [Documentation](http://kubernetes.github.io) & [Examples](http://releases.k8s.io/master/examples)