New menu command: Edit->Fill Selection (shortcut key: Backspace). This will fill any selected area with the primary color.
New toolbar item / hotkey: The brush size may be manipulated with +/- buttons in the toolbar. Hotkeys for this are [ and ], and you may hold Ctrl to increment or decrement by 5.
New translations: They are not complete yet, and in fact some have just been started. They are mostly in place right now in order to get the code correct: Chinese (Simplified), French, German, Japanese, Korean, Portugese, and Spanish. You will have the ability to choose one of these languages during installation, and from the Help->Language menu, but the text will still be either mostly or completely English. Complete translations will be finished by February.
Upper-left coordinate of selection is now displayed in the status bar
When moving text with the Text tool, the anchor point coordinate is now displayed in the status bar
Fixed: In high-DPI mode (120dpi), the color swatch would translate the mouse location to the wrong color palette entry
Fixed: Alpha-channel handling for bicubic and super-sampling image resampling methods
Fixed: Very slow download speeds for updates in Vista
Fixed: In Vista, the updater would relaunch Paint.NET with the same administrator privileges that the installer executed in. Now it will relaunch Paint.NET with the pre-elevation user and privilege level. Note that this fix will not be apparent until the next update to Paint.NET.
Fixed some layout and rendering issues with the floating tool windows in Vista
Fixed a rendering issue with the font selection dropdown list
Fixed a performance issue with the font selection dropdown list in Vista
Right-clicking on a color in the palette will now set the secondary color
Palette files now allow comments to be placed after color values
Fixed: If Edit->Paste in to New Image was pasting a bitmap with transparency (from Paint.NET), it would have a white background instead of a transparent background.
Fixed: Right-clicking on a .PDN file in Explorer and then selecting "Print" would not work if Paint.NET was already open
Fixed over 10 user-reported crash bugs
Fixed several out-of-memory crashes
Fixes for many other miscellaneous, mostly minor, bugs