I haven't been posting on my blog this year, but I've still been working, and have just released a feature for Lightroom
that's interesting enough to warrant a mention here: the Compare Photo Edits
feature of my Bag-o-Goodies plugin.

As the name implies, it reports on the differences in how two photos have been edited. This includes not only
develop changes, but also editable-metadata changes. It also reports on whether collection membership is the same.

It can be useful in figuring out, for example, the difference in look between two photos, or to figure out why a virtual copy exists.

Sometimes one creates a virtual copy and ends up not doing anything with it, so it's an exact duplicate of its master or of a sibling virtual copy.
These can be found catalog-wide via another new feature I just released, Find Superfluous Virtual Copies.