From Bentley reply geoids are not likely to be provided by default with Context Capture because all gtx files for all countries would be too heavy in the installation package
But I propose a better idea that geoids could be downloaded automatically when selected using geocoordination service. This way there will be no need to include in base installation. Also CCViewer could download it if opened model is based on geoid. Once geoids are downloaded they will remain there even if you upgrade ContextCapture to the next versions. Now RTK is becoming more popular so this is a must to have.