Some rumor circling around since the end of last year but only some screenshots without link to official sources. Take it with a grain of salt but very likely to be authentic though.
They are mainly about a commend letter for an employee from other company to develop Project AH for 703rd Research Institute CSIC, the turbine designing branch of CSIC.
The said employee was the project manager from a subsystem company to develop Project AH for 703 and the letter also said the company has experience in Project TS, A02 and A03.
Project TS probably stands for "testing" project in CV16.
A02 and A03, as everyone has already known, is the turbine development codename for CV17 and CV18.
Meanwhile, it should have been A04 consequently if the next CV was still a conventional one. However the codename has been changed to "Project AH" where H is very likely to stand for "Nuclear."
The full name for the subsystem is
2台主汽轮齿轮机组及全尺寸集成多级汽水分离装置试验调试项目
Rough translation: Test project for 2 main turbine gear units and full-size integrated multi-stage steam and water separation unit.
Honestly I have no idea what it means and the commend letter was sent on 08/31/2022.