We are happy to announce that we just released Irrlicht version 1.4.2. This version
contains a lot of bug fixes and improvements:

• Unified handling of the zwrite enable flag for transparent materials for compatibilit with older Irrlicht versions. There are now functions in
  IVideoDriver and ISceneManager to enable/disable ZWrite flags of transparent materials.
• Improvements of the file loaders, OpenGL renderer, memory usage
• Optimization of the skeletal animation rendering code
• Tons of other bug fixes and small improvements

See changes.txt in the SDK for details.
An irrEdit version for 1.4.2 (the 3D editor for irrlicht) is also already available.
Happy downloading!