This release focuses on extending support for multiple target frameworks.

Support chart looks like this:

Framework Target Runtime
.NET Framework 1.0 * *
.NET Framework 1.1 * *
.NET Framework 2.0 * *
.NET Framework 3.5 * *
.NET Compact Framework 1.0 *  
.NET Compact Framework 2.0 *  
Mono 1.0 Profile * *
Mono 2.0 Profile * *
Mono 3.5 Profile * *
Moonlight 2.0 *  
Shared Source CLI 1.0 *  
Silverlight 2.0 *  

NAnt 0.86 Beta 1 Release