Centauri Dreams has coverage They note we would learn much about flying and navigating an electric sail during the testing and implementation of the Uranus mission.
A demonstrator electric sail mission, then, is designed to keep costs down and reach its destination as fast as possible, with the interesting spin that, because we’re in need of no gravitational assists, the Uranus probe will have no launch window constraints. As defined in the paper on this work, the probe would consist of three modules stacked together: The electric sail module, a carrier module and an entry module. The entry module would be composed of the atmospheric probe and a heat-shield.
The probe would get up to a speed of 100 kilometers per second which is about six times faster than Voyager 1.
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