Updated

Thanks for waiting: the patch that will enable VB Express and VC# Express April CTP to create WPF applications is available.

VC# Express: http://download.microsoft.com/download/8/2/6/8267fa5a-e725-4bb8-850a-2f5fee4702db/OrcasVCSAprilCTPWPFPatch.EXE

VB Express: http://download.microsoft.com/download/a/8/c/a8c65b33-600a-4ebc-9310-fc0845a892a2/MicrosoftVisualBasicExpressOrcasAprilCTPWPFPatch.EXE