Integrating Web 2.0 technologies in e-government opens up new opportunities for improving the quality of online public services and developing new ones, and can potentially contribute in achieving e-government strategic objectives. This paper presents and analyzes the result of an exploratory field study conducted recently with a group of e-government experts in France. Our objective is to identify e-government development trends, and to assess the transformation potential associated with Web 2.0 and Open Innovation (OI). We have adopted an enriched Delphi method, and used a GSS (Group Support System) to facilitate brainstorming and idea generation. Preliminary results are analyzed from two perspectives: Their contribution to e-government 2.0 and to open government, and their differences and complementarities with a recent governmental report on the future of public e-services in France. This work is a first step in a comprehensive research whose purpose is the study of public organizations’ transformation and the emergence of the government 2.0 concept. It is a contribution to a better understanding of e-government future.