The recent posts, primarily from Keith and Steve (forwarded by me) suggest to me that it might be useful to keep a historical "What's New" section in the documentation, rather than just for the current version.
For example, currently the table of contents in the python docs is:
Main Page Global Module Index What's New 1 PEP 218: A Standard Set Datatype 2 PEP 255: Simple Generators . . .
Would anyone see any advantage to having the "What's New" section like:
What's New in... Python 2.3 1 PEP 218: A Standard Set Datatype Python 2.2 1 PEP 234: Iterators . . .
I use different versions of Python for different projects (in particular, 2.1 and 2.3) and I think this would be a useful quick reference.