This paper discusses the discovery of the exoplanet Kepler-452b, which was announced in July 2015. Kepler-452b is the most Earth-like exoplanet ever discovered, and is located in the constellation Cygnus about 1,400 light-years away from Earth.
From Wikipedia
Kepler-452b is a disputed super-Earth exoplanet candidate. Initial reports claim it is orbiting within the inner edge of the habitable zone of the sun-like star Kepler-452 and is the only planet in the system discovered by the Kepler space telescope. It is located about 1,800 light-years (550 pc) from Earth in the constellation of Cygnus. Two subsequent reports refuted the claim but additional work has reestablished the claim.