The Nudge Contextual Menu “nudges” the Finder to update the information it displays about a file or folder. Use it on any item (or groups of items) if you suspect the Finder hasn’t updated its view. This should work for most attribute changes, icon changes, size changes, files that have been saved, but don’t appear, and so forth.
Unfortunately, some attribute changes are NOT properly recognized. This includes the “invisible” and “package” attributes. For changes to those attributes, you must quit and restart the Finder.
Version 1.0 (size: 64k) is for Mac OS X 10.2 (Jaguar) and up.
The Nudge Contextual Menu is freeware. More info and download link here.