What I would really like to know now from Sun is the following:
What encumbrances (in some detail) exist?
Why are these pieces encumbered? (Is it because of copyright or patents? If it is copyright, it is easy enough to replace these, but if there are patent issues as well, then there may be no way for the free software community to help.)
Will you need developers who aren't 'tainted' by seeing any Sun source code in order to replace the encumbered code? (This is an area where GNU/classpath can help, but they would need to know that they need to keep up with their policies policies about not allowing contributions by tainted developers until all of the encumbrances are cleared.)