Version 4.20 ( - CURRENT VERSION - ) (Release date: 2008-07-16)

Changelog:
Basic Unicode support added (Properties->Misc 1, thanks to Christophe Paris!)
New zoom options; improved relative zoom (Properties->Viewing)
Thumbnails can be sorted manually using drag/drop
GIF animations can be played in fullscreen/slideshow mode
New Advanced batch options: Fine rotation, Blur, Median ...
Option to show TIF Annotations created by Kodak Imaging (Properties->Viewing)
New JPG save option: Set file size (PlugIn: thanks to Lucian Sabo)
New save menu: Save for Web (PlugIn: thanks to Lucian Sabo)
New thumbnails options to disable or configure info text on mouse over
New edit menu: Auto crop borders (remove outside lines/rows of same color)
New feature in Canvas dialog: negative border sizes are allowed (border crop)
New option in Capture dialog: Capture desktop on current monitor only
New options in Custom selection dialog: Set custom ratio; Save values
New slideshow option (window mode): Set window position
New Fullscreen display options: Fit to screen width/height (Hotkeys: 5/6)
IPTC data in TIF files can be showed (no editing yet)
Fixed Thumbnails crash on multi core CPUs
New command line option for EXE Slideshow: /window=(x,y,width,height)
Option to set Status bar text using placeholders (Properties->Misc 3)
Option for proportional paste into selection (Properties->Misc 3)
Support for EXR format (PlugIn)
Support for MAG format (MAKI, Formats PlugIn)
Default display option is now: Fit only big images to desktop
Expanded Copy/Move dialog (4 more folders)
New Edit menu: Maximize and center selection (hold CTRL to center only)
New option in Edit Palette dialog: Click on image to find color index
New Thumbnails menu: Remove selected thumbs from list, Hotkey: Ctrl+Del
New Thumbnails menu: Save selected files names as TXT
New Thumbnails menu: Start Panorama dialog with selected files
The Enhance/Correct colors dialog can be resized/maximized
Enhanced TIF-LZW saving with 24 BPP images (smaller files are created)
New command line option: /jpg_rotate=(...values...)
JPG lossless rotation, see i_options.txt for examples
New command line option: /transpcolor=(r,g,b)
Set transparent color: can be used for GIF/PNG/ICO saving
New Hotkey: SHIFT + F = Fit only big images to desktop
New Hotkey: SHIFT + W = Fit images to window
New Hotkey: NUM-PAD 5 = Scroll to image center
New Hotkey/Menu: CTRL + N = Open current file in another IrfanView window
New Thumbnails option: Auto scroll during creation
New option in JPG IPTC/Comment dialog: Append text to old text
Scan dialog: 'Skip existing files' works also for multipage TIF files
Several PlugIns are changed/updated, please install the newest versions
http://www.irfanview.com/plugins.htm
Some minor bugs/features fixed/added (scrolling)