For the first time ever, scientists are working on unveiling the image of a black hole. This is to be done by using collective data from various telescopes that have been placed at different places on the globe. This group of telescopes is called the Event Horizon Telescope (yes, singular).
To obtain an image of a black hole, an Earth-sized telescope is required. This is why the EHT has several individual radio dishes all over the planet. In April 2017, this telescope observed a point near the center of the Milky Way, where a massive black hole is present. Data from these dishes has been collected and is being studied by astrophysicists.
By the end of 2018, we might be looking at how a black hole actually looks.