Blender 2.43 The Latest Release From The Blender Foundation-- And It Is FREE!.

"The 2.43 release could be nicked the "Multi" version; with multi-resolution Meshes, multi-level UV, multi-layer images and multi-pass rendering, to name some highlights.

Much appreciated are the new Mesh Sculpt and Retopo painting tools. Artists using CVS versions have created amazing models with it already. But seven months of development time have resulted in a giant list of features & improvement & fixes, as you can find below.[...]"