This is a new major release of PyTables, and probably the last major one of the 1.x series (i.e. with numarray at the core). On it, we have implemented better code to deal with table buffers, enhanced the capability for reading native HDF5 files, enhanced support for 64-bit platforms (but not with Python 2.5: see Special Warning section below), better support for AIX, optional automatic parent creation and the traditional amount of bug fixes.
Go to the PyTables web site for downloading the beast: http://www.pytables.org/
Enjoy!