The March CTP of the Expression Interactive Designer has been released. It is built against the February CTP of WinFx. You can download the March CTP of the Expression Interactive Designer here. The Expression Interactive Designer (code-named Sparkle) is a design tool for creating WPF interfaces, and allows you to create UI without having to know Xaml syntax. Also of interest to WPF developers, the Expression Interactive Designer was written in WPF. It was announced at PDC 2005, and the first publicly available version was the January CTP. You can read more about this latest release here on the Expression weblog.