From an email I received from Xceed a couple of days ago:

In 25 days from now( that is, 6/14) , the free Express Edition v3.1 you registered for will be updated to v3.2, renamed to Standard Edition, and priced at $300. The free Express Edition will no longer be offered to newcomers.

So if you want this, you'd need to get to www.xceed.com by mid-June.  btw, I haven't used it although I downloaded it because I have the Telerik tools. 

Dan Martin