Meet the MMR by TRC Robotics: a modular robot that can be configured to take on a variety of tasks. It can be used in offices, manufacturing environments, and anywhere else with the right modules. These bots will run custom apps and have an app store available. The below video gives you an idea what you can do with these robots:
The MMR-Platform is still in development phase. Multiple version are expected to be introduced, including a full height rolling version.