It will be “a high-bodied car, with an all-new aluminium architecture” says the company.
That’s just about it other than what appears to be PR and marketing waffle. For example:
“This new Rolls-Royce will be Effortless … Everywhere. Many discerning customers have urged us to develop this new car – and we have listened. At Rolls-Royce Motor Cars we are uniquely focused on the desires of our customers and are driven by our own thirst to innovate. So we challenged our engineers and design team, led by Director of Design Giles Taylor, to create a different and exceptional new car…”