Oskari is used world wide to provide web based map applications that are built on top of existing spatial data infrastructures. Oskari offers building blocks for creating and customizing your own geoportals and allows embedding maps to other sites that can be controlled with a simple API. In addition to showing data from spatial services, Oskari offers hooks for things like using your own search backend and fetching/presenting statistical data. This presentation will go through the improvements to existing functionalities and new features introduced in Oskari during the last year. The focus will be on functionalities from developer perspective like: - Improvements for working with vector features - API-improvements for embedded maps. - Rewrite of service capabilities parsing and handling - Planned developments for better theming support and mobile-device friendliness for the geoportal You can try some of the functionalities Oskari offers out-of-the-box on our sample application: demo.oskari.org.