The only relevant part of the article is below. Song Xinzhi did say the below portion on record; the rest of the article is just the writer's speculation.Minnie Chan again on dope??
The third step is to develop a new fan and low-pressure turbine to fully realize the potential of the high-power core machine. This is the full version of the WS15, with an afterburner thrust of about 18 tons. According to Song Xinzhi, the thrust-to-weight ratio of WS15 has reached 10.8 to 10.9, and its afterburner thrust fuel consumption rate is 1.98, which is much better than F119's 2.4. Most of our speculations last year have been confirmed by Song Xinzhi. As for the second step, it has not yet been fully confirmed. Perhaps there will be new news at this.