The range_e, as it's being called, can be expected in showrooms in early 2013, with a production start date somewhere near the end of 2012. Details of the hybrid drivetrain include a 3.0L diesel V6, 8-speed ZF automatic transmission, and a maximum all-electric range of 20 miles. Performance targets include a CO2 emissions target below 100 g/km, and a top speed in the neighborhood of 120mph. Details regarding the vehicle's batteries have yet to be released.
Rumors suggest that 2 additional variations of the range_e will arrive in the next 5 years. Land Rover may already be developing a gasoline-powered version of the hybrid system. It's also possible that we'll see a plug-in Range Rover by 2015.