I'm pleased to announce the release of Hydra 9.0.0! This is the first release of the Hydra gem for Fedora 4 and represents almost a year of effort. In addition to working with Fedora 4, Hydra 9 includes many improvements and bug fixes. Especially notable is the ability to add RDF properties on repository objects themselves (no need for datastreams) and large-file streaming support. Additionally, several supporting gems have major version upgrades to work with Hydra 9: hydra-collections 4.0.0 (https://rubygems.org/gems/hydra-collections) hydra-derivatives 1.0.0 (https://rubygems.org/gems/hydra-derivatives) hydra-editor 1.0.0 (https://rubygems.org/gems/hydra-editor) sufia 6.0.0.rc3 (https://rubygems.org/gems/sufia/versions/6.0.0.rc3) If you are planning on upgrading your repository from Fedora 3 to Fedora 4, there is a project started by Penn State called fedora-migrate that you should have a look at: https://github.com/projecthydra-labs/fedora-migrate At this point they are able to automatically migrate 98% of there objects to fedora-4 without any intervention. We would appreciate your help making this project get even better results. Release notes: https://github.com/projecthydra/active_fedora/releases/tag/v9.0.0 https://github.com/projecthydra/hydra-head/releases/tag/v9.0.0 If you're interested in having a test drive take a look at the Hydra tutorial: https://github.com/projecthydra/hydra/wiki/Dive-into-Hydra This material will be presented at a code4lib pre-conference afternoon workshop next week. Sign up here: http://www.eventbrite.com/e/code4lib-2015-tickets-14504558525 Enjoy, Justin Coyne Data Curation Experts