CJ-7 was developed with intention to replace CJ-6 but there is no recent news on its development.  May be the coming Zhuhai airshow will shed some light as to it has been cancelled or ongoing.
IMO CJ-7 project could had been cancelled considering lapse of time (14 years since maiden flight) and absence of recent news.
From Wikipedia:-
The CJ-7 is a Hongdu/Yakovlev jointly developed, single-engine, two-seat, propeller-driven, trainer aircraft. Hongdu Aviation Industry Group is an aircraft manufacturer that is part of the Aviation Industry Corporation of China (AVIC). The aircraft is intended to be the sole primary trainer used by Chinese aviation schools. The CJ-7 is capable of basic flight training and surveillance missions. The CJ-7 trainer is expected to replace large numbers of Nanchang CJ-6 trainers in the People's Liberation Army Air Force.
The CJ-7 project started in 2006. At the end of 2010, the CJ-7 made its first flight. It is expected PLAAF will purchase 300–500 CJ-7s.