Released on March 21st 2013.
The major change in version 2013 is the support for vector layers. Objects placed in vector layer can be modified at any time and maintain sharpness when the image is resized.
Released on January 28th 2012.
RW applications can now save files to locations protected by the Vista/Win7 UAC. You will get the standard UAC prompt when you attempt to save a file into a protected folder (like C:\Windows or C:\Program Files) instead of just a failure report.
Released on December 1st 2011.
The PNG codec is now able to read and write PNG animations. Animations and pictures are always written using 32-bit color depth. To create animated pngs instead of gifs by default, add the Animated PNG Image to your favorite formats above the GIF Image on the Formats tab of the Application options window.
Released on November 30th 2011.
The .PDN format codec is now able to import files saved with version 3.5.10 of Paint.net. Minor bugs were fixed in export to .pdn, .xcf and .psd.
Released on October 19th 2011.
The satin image effect was added. It is by default only available as a layer style and works similarly as the Photoshop's satin layer style.
Released on October 9th 2011. Old version archive.
This version includes many significant changes and updates. The tool can now edit animations and it can export and import Photoshop, GIMP and Paint.net files. There are new tools and filters from RealWorld Photos.
Released on April 14th 2009. Old version archive.
This version is focused on non-image-related features:
Released on December 25th 2008. Old version archive.
This is the first publicly available version of Paint.COM featuring: