Land Rover seems to have trouble to figure about the successor to the Defender. The company knows what the vehicle should have, but doesn't know how to engineer using its existing components. Its said that Land Rover had planned to use its T5 steel platform for Project Icon. Though according to the report, the company now thinks that the chassis would be too heavy to be a viable option.
So how the next-generation Defender will look like? All we know for sure is that the vehicle will still wear the Defender name.