Vesta is a more advanced Alexa that can go about houses thanks to advanced cameras and computer vision systems that are currently featured in self-driving cars. Additionally, the domestic robot could come with a pair of robotic arms so it may be able to carry things around the house. The appearance may be humanoid in order to instill a sense of friendliness.
https://www.notebookcheck.net/Amazon-s-project-Vesta-aims-to-launch-domestic-robots-by-2019.300792.0.html