Constantinople is part of the release called Metropolis and it will be integrated into block #7080000. Developers have prepared three forks for the beginning of 2019, including Constantinople. Other two forks are “hard forks”, which will result in creating new cryptocurrencies, Classic Vision and Ethereum Nowa. Users are notified that Constantinople fork will take place between the 15-16th of January 2019.
Read the details in the article of Coinidol dot com, the world blockchain news outlet: https://coinidol.com/ethereum-is-waiting-for-new-upgrade/