DSpace 7.0, released in August 2021, was the largest release in the history of DSpace and required multiple years of development. In addition to the resources here, Lyrasis (the organizational home for DSpace) maintains DSpace technical and user documentation in its wiki: Lyrasis DSpace 7 Documentation
DSpace 7 represents a major change from DSpace 6. It includes:
A new User Interface based onAngular (to replace XMLUI and JSPUI)
A refactored/enhanced REST API (using modern REST best practices)
Redesigned submissions and workflows
A new Configurable Entities object model, which allows for the creation of new "typed" Items, and storing relationships between Items
Improved compliance with web accessibility guidelines
See the documentation in this section for guidance on using DSpace and how it compares to DSpace 6.x.