One additional change that content users will observe with 3.8 XML Documentation build on baselines tab is few more labels with images. This was not there in previous build.
With the new release, content users can also apply labels on indirect references like images etc. using the 'Add Labels' option on the baselines tab. Earlier these labels were only limited to the direct references and it was difficult to choose the correct versions of images while creating the baseline using labels.
With this feature, all labels for a specific versions are shown on the baselines tab including those created by default workflows also. Refer the above screenshot and you will notice the labels as 1.0, 1.1 etc on images. which are not manually created rather created by the 'DAM Metadata Writeback' workflow of AEM.