--- title: "What’s new in Calico v3.11" source: "https://www.tigera.io/blog/whats-new-in-calico-v3-11/" --- [Technical Blog](https://www.tigera.io/category/technical-blog/) # What’s new in Calico v3.11 By [Laurence Man](https://www.tigera.io/blog/author/laurencemann/) on Dec 30, 2019 • 2 min read We are very excited to announce Calico v3.11. Thank you to all of the contributors to this release! For detailed release notes please go [here](http://docs.projectcalico.org/v3.11/release-notes). Below are some highlights from the release. ## Support dual stack pod IPs Native support for both IPv4 and IPv6 is known as “dual stack” and Kubernetes recently added alpha-level support for this in versions 1.16 and 1.17. With this v3.11 release, Calico now supports the new Kubernetes APIs for dual stack! This allows you to use both IPv4 and IPv6 for your cluster pods. For more information on enabling dual stack, please see the [howto](http://docs.projectcalico.org/v3.11/networking/dual-stack) documentation. ## Calico for OpenStack enhancements Calico for OpenStack now supports etcd authentication with etcd v3.3.11 and later. We previously supported etcd authentication with the user name being specified by a TLS client certificate, but that was realized to be insecure, and etcd authentication with HTTP/JSON now requires a different approach, for which we have added support in this release. We’ve also added more detailed logging in various scenarios where Calico for OpenStack components see errors in working with the etcd cluster. ## Learn more To find out more details about all the features and changes in Calico v3.11, check out the full [release notes](http://docs.projectcalico.org/v3.11/release-notes). Or, try it out in few minutes by following the [quickstart guide](http://docs.projectcalico.org/v3.11/getting-started/kubernetes/)! [Open Source](https://www.tigera.io/tags/open-source/)[Release](https://www.tigera.io/tags/release/)[Project Calico](https://www.tigera.io/tags/project-calico/) ## Related posts [![What’s new in Calico: Spring 2026 Release](https://www.tigera.io/app/uploads/2026/06/Whats-New-in-Calico-NEW-TEMPLATE-2026.png)](https://www.tigera.io/blog/whats-new-in-calico-spring-2026-release/) [Company Blog](https://www.tigera.io/category/company-blog/) #### [What’s new in Calico: Spring 2026 Release](https://www.tigera.io/blog/whats-new-in-calico-spring-2026-release/) By [Veronika Smolik](https://www.tigera.io/blog/author/veronika-smolik/) on Jun 2, 2026 Kubernetes has come a long way since its debut in 2014. It’s gone from running a couple of containerized microservices to orchestrating fleets of production workloads spanning everything from AI agents to full scale VMs... [Read more](https://www.tigera.io/blog/whats-new-in-calico-spring-2026-release/) [![Kubernetes Operational Maturity: Secure and Resilient Cluster Federation with Cluster Mesh](https://www.tigera.io/app/uploads/2026/05/Kubernetes-Operational-Maturity-Secure-and-Resilient-Cluster-Federation-with-Cluster-Mesh.png)](https://www.tigera.io/blog/kubernetes-operational-maturity-secure-and-resilient-cluster-federation-with-cluster-mesh/) #### [Kubernetes Operational Maturity: Secure and Resilient Cluster Federation with Cluster Mesh](https://www.tigera.io/blog/kubernetes-operational-maturity-secure-and-resilient-cluster-federation-with-cluster-mesh/) By [Veronika Smolik](https://www.tigera.io/blog/author/veronika-smolik/) on May 25, 2026 Practically no one runs a single Kubernetes cluster in production these days. Maybe that’s how it started but data sovereignty requirements, acquisitions, AI initiatives and the need for edge servers, among other considerations, have pulled... [Read more](https://www.tigera.io/blog/kubernetes-operational-maturity-secure-and-resilient-cluster-federation-with-cluster-mesh/) [![What’s New in Calico v3.32](https://www.tigera.io/app/uploads/2026/05/Green-Please-use-a-different-background-color-alternately-1.png)](https://www.tigera.io/blog/whats-new-in-calico-v3-32/) #### [What’s New in Calico v3.32](https://www.tigera.io/blog/whats-new-in-calico-v3-32/) By [Reza Ramezanpour](https://www.tigera.io/blog/author/rezar/) on May 13, 2026 We’re excited to announce the release of Calico Open Source v3.32! 🎉 This release corresponds with Kubernetes v1.36 (Codename Haru) and it goes beyond just sharing a cat as the mascot of the release, it... [Read more](https://www.tigera.io/blog/whats-new-in-calico-v3-32/)