> I've had a go at summarising the key aims of LaTeX3, as I understand
    > them, on  my blog (http://www.texdev.net).  

I'm very glad to read that, unofficial as it is.

My question is, is LaTeX3 intended to be able to process real-life
LaTeX2e packages + documents (perhaps in some kind of compatibility
mode a la LaTeX 2.09 -> 2e)?