The Volumetric Video Workshop 2026 aims to accelerate the transition of volumetric video technology from laboratory prototypes to robust, production- and consumer-ready systems, supporting advances in immersive and interactive experiences. The workshop comprises two parts: (1) the second edition of the Volumetric Video Challenge, which retains the compression and sparse-view reconstruction tracks from 2025 and evaluates submissions on an expanded high-quality multi-view benchmark built on the SIGGRAPH Asia 2025 challenge dataset and augmented with the SelfCap dataset; and (2) invited keynote talks highlighting the latest developments in volumetric video.