Lo trovate qui: http://www.eecs.wsu.edu/paint.net/download.htm
Novità :
Scaling and rotation of selected pixels (use the Move tool after
selecting)
Ability to modify a selection with union and subtraction (NOTE:
performance is currently quite bad)
Unobtrusive update notification system
Measurements and rulers available in inches and centimeters, as well
as pixels
Holding down spacebar allows you to pan with any tool
Shift+mouse wheel now scrolls horizontally
Brush tools now render a preview that corresponds to the brush size
TGA file format support
Many areas have been heavily optimized for performance (scrolling,
zooming in, Blur effect, selection rendering)
New effect: Add Noise
New adjustment: Sepia
Brightness & Contrast adjustment now works with luminance, not
RGB, scaling. This produces more correct results.
New Rotate/Zoom user interface that allows for 3D rotation, tilting,
and image tiling
Further optimized for dual-core CPU's (Athlon X2, Pentium D) and
multiprocessor systems (Xeon, Opteron)
fonte: http://blogs.msdn.com/rickbrew/archive/2005/08/29/457733.aspx