15 Nov 2017 — The LIGO and Virgo Collaborations detected another binary black hole merger on June 8, 2017. The gravitational waves were detected by the twin LIGO detectors. With components 12 and 7 solar masses, this is the lightest binary black hole merger observed so far.
For additional information read the news release at the LIGO Lab page. See also the ligo.org detection page for GW170608.