This is good news. I know that the NRC in the USA are already working on getting site licenses approved for the AP1000 reactors and this is a welcome move that should spark more interest in this Westinghouse design.
There are also several more designs apparently being planned for construction in China, in the near future. An excerpt from World-Nuclear-News:
The AP1000 is to be one of two designs built en-masse in China. The other is the CPR-1000, itself derived from French reactors imported for the Daya Bay nuclear power plant in the 1980s. China has a range of power reactors including Candu-6s from Atomic Energy of Canada Ltd and VVER-1000s from AtomStroyExport. Two Areva EPRs are planned, as are two more VVER-1000s.