Mask Pro 4.1 now supports 16-bit images, Photoshop CS3 and Intel-based Macintosh computers.
There are several new features included in Mask Pro 4 including
pressure sensitivity support for Wacom Tablets. Now, the harder you
press on your Wacom Tablet, the harder the edge you'll get in your
mask. Press lightly and you'll get a nice soft edge in your mask. With
Mask Pro 4 and your Wacom Tablet, masking has never been easier!