Corel has released updater version 1.5.1 of its masking software application, KnockOut for Mac OS X.
It's available for download direct from Corel.
KnockOut will mask complex objects, including smoke, glass, water and shadows. The application can also preserve details that have been unmaskable until now. It sports an Aqua-fied interface, but the downloadable version will not save or export files.
This is a beta release, and Corel wants its customers to work with the program in order to give Corel feedback for future revisions.