The Pleiades Concordat is just starting its march towards greatness. It is a group that has submitted an application to become a minor faction, and is set up as a quasi-religious faction with a strong expansionist aspect to it. There is tons of information on Inara about it, but here are the basics for the RP side:
The Pleiades Concordat is a Theocracy formed by the merger of a political party and the Apocalyptican faith movement. The Apocalypticans worshiped the deity who they believe sent the “Angels of Heaven” in 3125. The Pleiades Concordat was signed in 3302 by Primus Timothy Dalen and the leaders of the faith when evidence of the Angels were found, recognizing it as the official state faith. Since that momentous event, the Pleiades Concordat began developing in earnest, creating key scriptures and ordering its organizational branches. It has also developed a strong expansionist mentality.
If you are interested in a group that plans to be a significant force in the Elite Dangerous setting, then we are for you.
The Inara link is:
http://inara.cz/wing/1568