A new set of free  Decorative Floral Brushes by Pixels & IceCream has been released

Paul W has released 25 Grunge brushes for Photoshop over on Brusheezy

Also on Brusheezy is a bunch of Photoshop brushes created by V Wake that include postage stamps, graphs, diagrams and interesting ephemera

Obsidian Dawn has also released a collection of brushes in the star shapes