It was reported in May 2015 that China and Russia just signed the agreement to co-develop an advanced heavy-lift helicopter (AHLH) for the Chinese market. The twin-engine design appears bigger than American CH-53E but smaller than Russian Mi-26. The helicopter's max TO weight is 38.2t and the max speed is 300km/hr. Its ceiling is 5,700m and range is 630km. The latest news (September 2015) suggested that China has begun to develop the next generation stealth attack helicopter with certain features similar to those of American RAH-66. Compared to the earlier Z-10/Z-19, it would have better maneuverability, survivability and joint operational capability. The helicopter could enter the service with PLA Army as early as 2020 would replace the Z-9WA/WE series.