The Vertical Flight Society (VFS) is organizing the 4th Annual H2-Aero Symposium on April 2–3, 2025, in Long Beach, California, with a focus on decarbonizing aviation through hydrogen advancements. The event will feature keynotes from global experts aiming to push the envelope in hydrogen aviation, showcasing innovations from various aircraft applications. Industry giants like Boeing, Joby Aviation, and KLM Royal Dutch Airlines will participate, along with government speakers from FAA, CAA, and EASA, emphasizing the importance of hydrogen technologies in aviation. The Symposium's theme, 'Pushing the Envelope,' will include real-world demonstrations and insights from leading companies and organizations involved in hydrogen and aerospace. Long Beach was chosen for its forward-thinking vision in supporting hydrogen for transportation, with the Joby SHy4's milestone 561-mile flight serving as a notable example of hydrogen aviation progress. The VFS, known for its history in supporting vertical flight applications, sees hydrogen fuel cell technology as a pivotal moment in aviation across different aircraft types. The event aims to foster collaboration and drive technological advancements in the aerospace industry, continuing VFS's legacy of supporting innovative aircraft technologies.