Unfortunately, I think the legal questions, particularly regarding patents, around Mono need to be addressed before we'd make an "official" port.  There's been a lot of handwaving on the subject but the recent Novell-Microsoft agreement would seem to imply there may be unresolved issues.  For instance, while the Mono FAQ links to  an unofficial declaration by a Microsoft employee that the patents for the .NET CLI are available under a "royalty-free and otherwise RAND" license, it's not clear whether or not an explicit license agreement must be entered into, and what other non-discriminatory, but potentially difficult, terms might apply.  I'd also rather see a definitive and official declaration from Microsoft on the subject.

As you see, we have supplied other standalone and unencumbered languages, such as Python, Ruby, and Java, so you can certainly use those languages to build alternative applications, and of, course, you can always use C and C++.

It's actually fairly easy to port Qt-embedded, if you're looking for alternative widget sets.