A recently released paper reports on data from the Akatsuki orbiter. A massive circulating cloud pattern has been identified that has been sustained over the planet’s surface for several decades, but has only just been definitively located. It resembles an enormous weather front but requires further study to fully understand the phenomenon.

 Read more about it:

Peralta et al: A Long‐Lived Sharp Disruption on the Lower Clouds of Venus

JAXA: Venus Climate Orbiter Akatsuki

EarthSky: A deep, giant cloud disruption found on Venus