Listed below are the previous, current, and proposed upcoming versions of GBFS along with the pull request suggesting the desired changes.
2019 December 20 - GBFS copyright transferred to NABSA
2015 November 05 - GBFS V1.0 Adopted by NABSA board - Original draft spec in a Google doc (reference only)
2015 August - Latest changes incorporated and name change to GBFS (comments from Motivate, 8D, others)
2015 June - Proposed refinements (prepared by Jesse Chan-Norris on behalf of Motivate)
2015 January - NABSA Draft (prepared by Mitch Vars)
#182 - Require license_url, add attribution fields