It looks like it's just about time for another major release of NWSGI - the last two Decembers have had major releases, and I see no need to break the trend this year. There are going to be a few major changes this time around, so if anyone has any objections, let me know as soon as possible.
Most importantly, it will only support IronPython 2.7 and thus will require .NET 4.0. Like the IronPython team, I'm not going out of my way to break compatibility with .NET 2.0 (or IronPython 2.6, for that matter), but I won't be distributing anything but IronPython 2.7/.NET 4.0 binaries.
Similarly, I will not be supporting IIS 6 (Windows Server 2003) anymore. Again, I won't go out of my way to break it, but I won't be testing against it either. This means I can get rid of the wildcard handling for good, since IIS 7 has a good URL rewriter available.
The biggest change is that I am decoupling the WSGI processing from the ASP.NET pipeline. All of the functionality is currently part of an IHttpHandler implementation, which restricts it to be used with IIS (and Cassini) only. NWSGI 3.0, on the other hand, will allow NWSGI to be used with HttpListener or other servers such as Kayak by moving all WSGI processing into a separate class with no ASP.NET dependencies. The redesign will also allow me to improve the test coverage from zero to, well, something.
Finally, the licence will change to the Apache Licence 2.0 to match IronPython. The basic terms are identical to the Ms-PL licence that was used previously; the Apache licence is just more explicit and also more widely used.
As with the previous versions, I expect to release the final version shortly after IronPython 2.7 is released.