Here is a bit more background on this newly forming planet and its name:

Researchers from the US and Australia observed the phenomenon taking place in the solar system surrounding a star called LkCa 15, located 450 light-years away from Earth. Catching a planet in the making is an exciting first for astronomers because, of the nearly 2,000 exoplanets we’ve so far identified, none are in the process of formation.

The findings, published in Nature, describe how LkCa15 is surrounded by a special kind of protoplanetary disk, which forms around young stars from the debris that remains after the star has itself formed. The researchers’ hypothesis – now supported by their images – is that planets form inside the disk, accreting together from the debris and dust.

This will likely hold valuable evidence relating to our own solar system and understanding how some of our planets formed.

thanks to sciencealert.com for the great info
thanks to NASA for the pic