This document discusses the objectives and participants of RDA Europe 4.0, which aims to advance open data sharing across technologies and disciplines to address societal challenges. RDA Europe 4.0 will work towards making RDA a core part of the EU Open Science Strategy and providing resources to issues related to the Digital Single Market. It will facilitate cross-disciplinary research, build the RDA global community, contribute to interoperable data infrastructure, and help distribute funding opportunities. RDA Europe 4.0 involves over 6,900 RDA members, including working groups, chairs, council members, and projects related to EOSC and research infrastructure.