Go to the wiki. It has been built from 1981 and it is still under construction.This article says about an agreement between Russia and Ukraine signed in 2010 to build 3d and 4th reactors of Khmelnitskiy NPP. In 2015 this agreement was terminated. As far as I am ware the deal remained only on the paper.Here´s an example.No, this information can be not quite true.And this is my fault?I have bothered to search this information in Ukrainian, Russian and English segments of Internet. I have found nothing yet. Except a single statement in Wiki from your link. This statement is only in English version, Russian and Ukrainian versions say nothing about it.
World Nuclear Association - World Nuclear News
We were talking about 2002-2004 years. When the 2d reactor of Khmelnitskiy and 4th reactor of Rivne NPPs had been built.