Introduction / Bruno Arnaldi, Pascal Guitton and Guillaume Moreau -- New applications / Bruno Arnaldi Stéphane Cotin, Nadine Couture, Jean-Louis Dautin, Valérie Gouranton, François Gruson and Domitile Lourdeaux -- The democratization of VR-AR / Sébastien Kuntz, Richard Kulpa and Jérôme Royan -- Compexity and scientific challenges / Ferran Argelaguet Sanz, Bruno Arnaldi, Jean-Marie Burkhardt, Géry Casiez, Stéphane Donikian, Florian Gosselin, Xavier Granier, Patrick Le Callet, Vincent Lepetit, Maud Marchal, Guillaume Moreau, Jérôme Perret and Toinon Vigier -- Towards VE that are more closely related to the real world / Géry Casiez, Xavier Granier, Martin Hachet, Vincent Lepetit, Guillaume Moreau and Olivier Nannipieri -- Scientific and technical prospects / Caroline Baillard, Philippe Guillotel, Anatole Lécuyer, Fabien Lotte, Nicolas Mollet, Jean-Marie Normand and Gaël Seydoux -- The challenges and risks of democratization of VR-AR / Philippe Fuchs -- Conclusion / Bruno Arnaldi, Pascal Guitton and Guillaume Moreau -- Postface / Bruno Arnaldi, Pascal Guitton, and Guillaume Moreau.