If you have access to the CLI Meteor, the meteor show meteor has an interesting conclusion. This is what I got:
$ meteor show meteor Package: meteor@1.1.10 Maintainers: mdg Exports: Meteor This is an internal Meteor package. Recent versions: 1.1.5 March 18th, 2015 1.1.6 April 1st, 2015 1.1.7 September 22nd, 2015 1.1.9 September 29th, 2015 1.1.10 October 27th, 2015 installed Older and pre-release versions of meteor have been hidden. To see all 73 versions, run 'meteor show --show-all meteor'.
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