Reuters published on 3 September 2015 an article titled "China Building Two Aircraft Carriers: Taiwan Defense Ministry Report" by J.R. Wu. Taiwan's Defense Ministry says that one of the carriers is being built in Shanghai and the other in the northeastern city of Dalian. There was no estimate for completion of construction.
Globalsecurity.org published on 30 July 2015 a good summary titled "Aircraft Carrier Project Phase 2 - New Construction" of China's program to develop a carrier capacity. This program underscores China's intention to develop a blue water navy and will certainly lead to more frequent PLAN sailings in the Indian Ocean and waters off Africa.