Version : 4.2.5 (2019-09-30)
Added WebP file format support
Version : 4.2.2 (2019-09-17)
Can open AVIF files (but not saved), improved DirectDraw Surface support and 4-bit saving for PNG/BMP/TIFF
Version : 4.2.1 (2019-08-06)
Added JPEG XR file format support
Version : 4.2 (2019-07-12)
Added HEIF file format support, fixed performance with very large images, and upgraded and modernized the functionality of many existing file types
Version : 4.1 (2018-09-04)
Several effects rewritten to use GPU. Copy-and-paste selections. Two new effects: Morphology and Turbulence. Increased maximum zoom level to 6400%. IndirectUI enhancements.
Version : 4.0 (2014-06-23)
4.0 requires Windows 7 SP1 or newer (including 8/8.1, but excluding XP and Vista), and uses .NET Framework 4.5.1 (it can be installed automatically if needed)[18] This complete rewrite contains a brand new, asynchronous, fully multithreaded rendering engine, antialiased selections, a redesigned user interface, soft brushes, and a new shapes tool. Most Tools now support "fine-grained history" and it can adjust the properties of what the user has drawn before committing to the layer.
Version : 3.0 (2007-01-25)
This major release introduces a new multi-document interface (MDI), availability in 8 languages, a highly requested interactive gradient tool, four new effects, a user-definable color palette, lower disk space usage for scratch files, and a generally cleaner and improved user interface
Version : 2.0 (2004-12-16)
Many new effects, adjustments, and tools.
Version : 1.1 (2004-09-30)
Support for effect plugins.