Kimberly hasn't indicated what kind of vehicle layout would be used, but the new Evora sports car would seem a likely candidate with a battery taking the space of the small +2 rear seats. Another possibility could be a revival of the APX crossover concept from a couple of years back. California's Zap had hoped to use that platform for the basis of its own Zap-X, but nothing has been heard about that project for some time.
The other unknown is what, if any impact, this might have on Lotus' relationship with Tesla Motors. Lotus helped Tesla develop its Roadster and builds the rolling chassis for it. It's possible that Tesla could end up supplying motors or other powertrain bits to Lotus to help offset some of the cost of paying Lotus for its work.
[Source: Financial Times]