With the windows package of inkscape 0.46, becoming available overnight, the newest release is now available on Linux, OSX and Windows.
The following is an extract from the inkscape release announcement:
Tons of new features and performance improvements are included in this release. Dialogs now have the ability to be docked to the editing window. Gradients can be edited completely on-canvas. The new Paint Bucket Tool fills bounded areas with color. A new 3D Box tool helps create perspective-correct drawings. A new Tweak tool provides an intuitive method for editing paths and painting objects. The new Live Path Effects feature can create “brushes” and various organic effects on paths. Improvements to color management include support for color spaces other than sRGB. Most SVG filters are now implemented, and a new powerful UI is provided for editing filter stacks.