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[Moin]

It is supposed to be used in production. Communities hosted by Discourse also get those “dev” versions.
The dev suffix only indicates that this is not the final version of 3.3.0-beta4

@david

On tests-passed, starting with 3.2.0.beta1-dev, Discourse core version numbers will include a -dev suffix to indicate that they’re not the final ‘release’ versions of a beta.