The authors of the 1.0 specification have agreed to address the deficiencies and ambiguities of the GeoJSON format and revise the specification document. Consensus is that we will avoid going overboard; this will be a 1.1 not a 2.0. The primary components of the process are:
All authors signed off on every part of 1.0 and consensus among the authors will decide everything for 1.1. We probably can't tackle every worthy idea that is floated, but we'll do our best. Discussion, debate, and consensus forming will take place on a public (and archived) mailing list and wiki and the process of revision will be managed using Git and GitHub. Please see https://github.com/GeoJSONWG/geojson-spec and join us in keeping the format fit for future use.