We just released version 1.3 of the Irrlicht Engine. The following new features can be found in the SDK:

• Improved font support: Anti aliasing, alpha channels, different character sets, and a new font tool
• Enhanced GUI system: serialization, a first version of a GUI editor, element alignment, tool tips and more
• BurningVideo (the 2nd Software Rasterizer) speed improvements and new features: VertexCache, Bilinear Dither, Clipping test, …
• Several speed enhancements
• A lot of API breaking changes (for example to ISceneNodes and Materials), so be careful when updating
• Literally hundreds of bug fixes

For a detailed list of changes, please see changes.txt. You can download the package from the download page.