This could be me misunderstanding what is meant by "latest" but I've noticed a few times that there is a feature that the docs imply is available in the "latest" release but is not actually available yet, rather it will be available in the next release.

E.g. A new plugin, TreeLayerControl, is now listed as part of the "latest" version in the docs. However, it was only merged back in April (#1895) and is not actually available in the "latest" release, 0.16.0.