GeoMesa 3.1.0 is the first minor release in the 3.x line. This release includes 45 new features and bug fixes (TODO: Update link) since the 3.0.0 release. Users upgrading from 2.x should read the 3.0 Upgrade Guide. Install bundles for LocationTech GeoMesa can be downloaded from GitHub (TODO: verify link) or individual artifacts are available on Maven central. GeoMesa-NiFi Nars are available on GitHub (TODO: VERIFY LINK) or Maven central.
The 2.x and 3.x lines of GeoMesa follows Semantic Versioning. It provides data compatibility with versions back to 1.2.0. GeoMesa 3.x offers public API compatibility with versions 3.x. It offers binary compatibility with versions 3.1.x.
Note that the GeoMesa public API is not currently well defined. Users with deep code integration with GeoMesa may need to update some calls.
GeoMesa 3.1.0 supports upgrade in place from previous versions of 2.x or 3.0.x, by updating the GeoMesa JAR versions. Ensure that JARs are updated in all clients and servers. See the upgrade guide for information on changes that may affect you after the update.