--- title: "Project Calico 2.2 Released!" source: "https://www.tigera.io/blog/project-calico-2-2-released/" --- [Technical Blog](https://www.tigera.io/category/technical-blog/) # Project Calico 2.2 Released! By [Tom Denham](https://www.tigera.io/blog/author/tomdenham/) on May 02, 2017 • 2 min read ## **#ReleaseTheCalico** We’re proud to announce the release of [Project Calico 2.2](http://docs.projectcalico.org/v2.2/releases/).  Along with performance and occupancy improvements, version 2.2 brings BIRD and GoBGP updates and continues the move towards fully featured KDD (Kubernetes Datastore Driver) support. We also have to give a big thank you to [Wataru Ishida](http://github.com/ishidawataru) and [Josh Conant](http://github.com/insequent), who played a huge part in BGP updates in this release. **What’s New in Project Calico version 2.2:** **• Improved GoBGP Support** While the default for Project Calico is still BIRD, the GoBGP has taken some important steps towards feature parity (notably IPIP support) thanks to [Wataru](http://github.com/ishidawataru) who submitted a number of pull requests. This feature is still experimental and we’ve love to hear feedback from people trying it out.**• CNI Version Update** We’ve upgraded our CNI to provide better versioning, consistency, and make future upgrades with Kubernetes, Apache Mesos, and Rkt easier. This also enables us to add some great new features from the new CNI updates in future Calico versions. **• KDD (Kubernetes Datastore Driver) Routing** You can now use Project Calico with Kubernetes for both internal network routing and security in etcdless mode when using IP in IP overlays, or deploying on AWS. This builds on the 2.1 release that brought in KDD policies, and is a big step forward in terms of allowing full routing with BGP peering for etcdless mode in future releases. **• BGP Multipath Support with BIRD 1.6.3** BIRD 1.6.3 has been merged into Project Calico, allowing you to take advantage of BGP Multipath. A big thank you to [Josh](http://github.com/insequent) who submitted this pull request. **• Felix Performance and Occupancy Improvements** Numerous improvements were made for occupancy, including profiling, optimizing, and combining indexing datastructures as well as garbage collector tuning. There are also numerous improvements for performance including optimizing hot spots and batching/ back-pressure tuning to reduce CPU while under load. Overall, these changes showed a 60-70% decrease in occupancy at high scale over version 2.1, allowing large deployments to be handled more efficiently. Of course, you can see the full list as well as specific updates to individual components in the [2.2 Release Notes](http://docs.projectcalico.org/v2.2/releases/). What do you think about these new features? Tweet [@ProjectCalico](http://twitter.com/projectcalico) with hashtag [#ReleaseTheCalico](http://twitter.com/hashtag/releasethecalico) Have Questions about this Release? Ask them on [Slack](https://www.tigera.io/project-calico/community/) [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... 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