This is a feature release. The major update is ECEF coordinates, a useful way to represent points around and above the globe in a 3D Cartesian space. Interactive trajectory rendering is still in beta. Its current API will remain available through at least 1.6.0. We hope to clean up the rendering API in general between now and then.
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.