This 11 September 2019 video from NASA in the USA says about itself:
This may be the first known exoplanet with rain and clouds of water droplets. Two teams have detected signs that K2 18b has a damp atmosphere: here.
See also here.
Researchers have described a new, lower size limit for planets to maintain surface liquid water for long periods of time, extending the so-called Habitable or ‘Goldilocks” Zone for small, low-gravity planets. This research expands the search area for life in the universe and sheds light on the important process of atmospheric evolution on small planets: here.