Pricing will be announced closer to the on-sale date, Lotus said.
Lotus has 49 dealers in North America with a Lotus dealer network expansion to 200 dealers worldwide planned by the end of 2015, the company said.
The hand-built Evora 400 sheds almost 50 pounds compared to the current Evora and features a new aluminum chassis and new interior.
The mid-mounted 3.5-liter V6 engine with a new supercharger delivers 400 horsepower, as the name reflects, and 302 pound-feet of torque. The engine is linked to either a six-speed manual transmission or six-speed automatic transmission.
The Evora 400 has a top speed of 186 mph and sprints from 0 to 60 mph in 4.1 seconds.
"We have always said that to make a car better, you must make it faster and lighter," said Jean-Marc Gales, Group Lotus CEO, in a statement. "We have achieved this, of course, but we didn't stop there, as the considerable number of changes in the interior, chassis, engine and body design have warranted emphatically, the title of a new Lotus Evora."
Lotus designers aimed for a more aggressive stance with the redesign. The car looks lower and wider than its predecessor.
The cabin gets a lightweight forged magnesium steering wheel and a revised instrument cluster.
One key revision is narrower doorsills for easier entry and exit. New trim levels include Scottish leather.
"To accommodate the expected worldwide demand for the new Lotus Evora 400, total production of Lotus cars is planned to increase to 70 cars per week by September 2015," Lotus said. "Current build volumes are around 45 cars per week."
Edmunds says: Lotus is clearly on a mission to regain some of its luster, and the fastest and most powerful production Lotus ever is a great place to start.