The Java driver team has released two new major versions, OSS driver 4.0.0 and DSE driver 2.0.0, which address longstanding issues with the previous 3.x line through a major redesign of the architecture. These releases include many improvements and new features, as well as additional features for enterprise customer deployments in the DSE driver. The object mapper is not yet ported but will be released with OSS 4.1.0 / DSE 2.1.0. The drivers are available from Maven Central or can be downloaded from their servers.