In case you didn't know, Dec 2005 CTP is out.
I couldn't find any API differences between Nov CTP and Dec CTP, all the applications recompile without any error, however the resulting binaries are not compatible. Now every application is up to date, including the chess game which didn't have a Nov CTP version.

See http://www.valil.com/winfx for the binaries.
The individual links for the binaries:
http://www.valil.com/winfx/Valil.Chess.WinFX.xbap
http://www.valil.com/MathEquations/Valil.MathEquations.Sample.xbap
http://www.valil.com/winfx/ads.html
http://www.valil.com/winfx/MapBrowser.bin.zip

I intend to post the updated sources at the beginning of the next year.
If you really need the source code, send me an email and we'll discuss.

In my opinion, Avalon is a great piece of software (even if it's in CTP stage) and the forum/newsgroup/blogs/documentation has been an invaluable source of information.
I want to congratulate the Avalon team and to thank the community (Microsoft employees, Drew Marsh, Michael Latta, Jean-Luc David, David Sklar and others).