I've been following the thread about Pythoncard 1.0 with great interest.
As some on this list know, we use PythonCard in our book "Hello World! Computer Programming for Kids and Other Beginners". I thought PythonCard was a dead project, which was quite disappointing, as it is a great way to teach the basic concepts of GUIs. (The book uses Python to teach programming.) So it would be wonderful if Pythoncard lives on.
Our book uses Python 2.5. We provide installers for Windows, Mac, and Linux which install Python 2.5, as well as the other modules we use in the book - Pygame, Pythoncard (and their dependencies, NumPy and wxPython).
Currently we are considering a second edition to update the book to Python 3. One of the things holding us back is lack of Python 3 support in PythonCard. I believe that wxPython has still not been ported over to Python 3. I'm hoping that happens before too long, and I'm also hoping that when wxPython is ported to Python 3, PythonCard will follow suit.