The February 2007 CTP of WPF/E is now available.  This release includes a new SDK and samples, as well as some new features including: better text input and presentation capabilities, mouse cursor support, and better media rendering.

The Windows download is available here, while the Mac version is available here.  The Mac version is compatible with Firefox 1.5.0.8+ and Safari 2.0+, while the Windows version is compatible with IE 6+ and Firefox 1.5.0.8+.