This is a bugfix release. We identified a significant regression in our use of Matplotlib + Cartopy that would cause still-image maps to error out during rendering. There are also fair number of improvements to the documentation. If you use Tracktable from C++, be sure to look at the release notes (linked below) for an update on the C++ readers and writers before you upgrade.
Details are available in the Release Notes. As usual, source code, binary install packages and documentation are all available from the main Downloads page. As with previous releases, you can install Tracktable with pip install tracktable or upgrade an existing installation with pip install --upgrade tracktable.