The "State of the Climate in 2018" report has been published in the Bulletin of the American Meteorological Society. The report details the status and trajectory of many components of the climate system in 2018. Among these is soil moisture, included in the "Global Climate" chapter.
The soil moisture (using the ESA CCI SM dataset) section, authored by the CLIMERS group at TU Wien, provides an overview of the anomalies (compared to the reference period 1991 to 2010). Events such as the drought in South Africa as well as Australia and the flooding in Saudi Arabia are discussed with the report.
The full report is available here.