The Vera C. Rubin Observatory on Cerro Pachon, in Chile, is on track for a start of operations toward the end of 2023. This US-led telescope will conduct a ten-year Legacy Survey of Space and Time (LSST). Revisiting each location on the sky multiple times over the course of the survey will provide not only very deep multicolour imaging of the entire Southern Sky, but also the ability to chart changing events on a range of timescales from days to years. This exploration of time domain astronomy opens up many opportunities for new discovery. Thanks in part to support from the University of Waterloo and the Faculty of Science, Waterloo is hosting several Canadian Rubin fellowships, which will contribute both to the software architecture and science of the project. The first fellows, Liza Sazanova and Jack Elvin-Poole, arrived in Waterloo in Fall, 2022. In return for their technical support to the project, several WCA members (Percival, Hudson, Balogh ) are expected to have full Data Rights at first light.