SharpDevelop 4.0 now includes templates to create WPF and
Silverlight applications for IronRuby and IronPython.

The WPF template will create a basic WPF application that loads
its main window from disk by using
XamlReader.Load and then displays it.
The Silverlight template will create a basic Silverlight project
with an IronPython or IronRuby script file and a web page. The web
page (index.html) will open up the IronPython or IronRuby console
in the browser and run the script. The script file does not do much
apart from change the text in the browser.
On running the Silverlight project SharpDevelop will launch
Chiron and allow you to browse to the project's web page.
Chiron is an application that can be used as a personal web server
to host your silverlight application. It can also be used to
package up your Silverlight application ready for deployment.

All the existing IronPython project templates have also changed.
When a new IronPython project is run, by selecting the menu item
Debug | Run, it will now run the IronPython console
(ipy.exe) instead of starting the project's executable. This
change makes IronPython projects consistent with IronRuby projects.
It also means you can debug a new IronPython application straight
away without having to change the project options.
To switch back to the previous behaviour, and launch the
project's executable instead of ipy.exe, change the Start
Action in the project options to Start project. Note
that debugging the project's executable is not supported.
The screenshot below shows the project options for a new
IronPython project.

For more information on writing Silverlight applications in
IronPython and IronRuby see the following web sites.
http://ironpython.net/ironpython/browser/
http://ironruby.net/Browser