Rescan just unidentified files?

I noticed in the release notes that you guys added a “scan files” and “force rescan”. I found the force rescan under the drive settings but don’t see the “scan files” option anywhere so i’m not sure how it works.

I was thinking though, lots of new albums always get added to Roon as unidentified, would be nice to have an option to rescan just the unidentified albums/tracks in the library to see if any updates to the metadata services allow for new metadata to be pulled for the unidentified stuff. Seems like it would be a lot more efficient to scan only a small percentage of ones music library instead of everything.