Cool stuff. Lion shipped without Rosetta, so my ancient Photoshop CS2 install had to go and Acorn has more than filled that need for hundreds less and left my workflow intact. Now this popular image editor steps up with fresh OS X 10.7 functionality.

FlyingMeat, the company with the leaping whitetail deer logo, has shipped Acorn 3.1 (release notes), which is a major update packing new and updated features, as well as bug fixes aplenty:

• Native Mac OS X 10.7 full screen support.
• Acorn now supports Mac OS X 10.7′s autosave and versions features (off by default, set in prefs)
• Change an image’s color profile with the Image ▸ Assign Color Profile… menu item
• Select a default color profile in the advanced prefs
• PDF content on the clipboard can be pasted into a shape layer using Edit ▸ Paste
• The default color space is now “Generic RGB”
• Now easier to drag and drop folders onto Acorn’s icon in the Dock
• Rearranged the preferences window a bit
• See release notes for full list of changes

Acorn 3.1 is a free update for registered users and available on the Mac App Store ($49.99). A time limited demo is also available.