Resources for Python 3000
Guido's blog: http://www.artima.com/weblogs/index.jsp?blogger=guido
PEP 3000: http://python.org/dev/peps/pep-3000/
List of tests failing in the py3k-struni branch: Py3kStrUniTests
Py3k to-do list: Py3kToDo
How to write future-proof code today: FutureProofPython