DigiKam is a very feature rich and effective photo management application, after trying the new windows version after more than an year, i have to say that it has changed a lot, in terms of performance and in the meantime it seems to be very very stable.
Here are some of the newest features that the release contains..
version include a new album interface display mode named list-view. Icon view can be switched to a flat item list, where items can be sorted by properties columns as in a simple file manager. Columns can be customized to show file, image, metadata, or digiKam properties.
multiple versions of images
face detecttion ( version 3.3 due soon will include support for face recognition aswell)