We previously covered this contest just over a month ago, and the response the Windows Phone team have had from student developers is really impressive. 20 students have already received a special "Mango" device to aid them in unleashing their creations. 

There are still 30 "Mango" handsets to be won by students for great prototypes. Here's how you can enter:

  1. Make sure you’re registered for DreamSpark
  2. Download and install Expression Studio Ultimate and the new Mango Windows Phone Developer Tools (available free as a member of DreamSpark)
  3. Get the free Sketchflow Template for Windows Phone and create a Sketchflow mock-up of your app
  4. Post the Sketchflow mock-up somewhere online and tweet out the link using the hash tag #WPAppItUp
  5. We will review all prototypes and will contact the developers who submit the best ones and send them a special Mango developer device
Be sure to check out all the submissions on the official blog post. We've also linked Achia's entry (Colorful Sketch) below too.

Source: Windows Phone Developer Blog, thanks Achia for the heads up!