Ember Data has been advancing through 1.0.0-beta releases for some time. Most recently 1.0.0-beta.15 contains breaking changes, affecting ember-json-api, for example. Anyone else concerned with the lack of semantic versioning so that upgrades can be more carefully managed?
Not really, but it’s with reason.
The Ember core team stated, as with the beta release of Ember, that while breaking changes were not ideal, they would commit to SemVer with their 1.0.0 release. We saw that during the Ember 1.0.0-beta some breaking changes too, but it was reasonable.
I can’t find it, but I do believe there is a comment or post somewhere that says (about) the same thing for the Ember Data project.