The HY4Link project is set to revolutionize the European hydrogen infrastructure to accelerate decarbonization efforts in Belgium, Luxembourg, France, and Germany. Creos Luxembourg, Fluxys Hydrogen in Belgium, and GRTgaz in France have announced the inclusion of HY4Link in the European hydrogen network development plan. This project aims to become a Project of Common Interest and has already seen the partners sign a Memorandum of Understanding to enhance their cooperation on cross-border hydrogen infrastructure. HY4Link will conduct feasibility studies to establish an integrated cross-border hydrogen transport system in the Greater Region. It plans to connect industrial hydrogen demand clusters in France, Germany, and Luxembourg with green hydrogen supply centers along the North Sea coast and import hubs in Antwerp, Zeebrugge, Rotterdam, and Dunkirk. The project seeks to play a crucial role in developing an efficient hydrogen infrastructure as part of a decarbonized energy ecosystem. Specific plans include investigating interconnected networks between France-Luxembourg and Belgium-Luxembourg. The partnership will explore the development of hydrogen network connections between Bouzonville and Frisange, and potential pipeline connections between Luxembourg and Belgium's Hydrogen Backbone via Bras. Additionally, GRTgaz intends to construct a new pipeline to connect the H2Med corridor. Key stakeholders emphasize the importance of HY4Link in accelerating decarbonization efforts and the growth of a regional hydrogen economy. The project aligns with the vision of a decarbonized energy landscape and aims to reduce carbon emissions across various sectors while creating sustainable job opportunities in the Greater Region.