Since 8.x-1.0-alpha2 version, this module is not depending on GeoPHP module anymore. The GeoPHP library dependency is being managed through composer. Please read https://www.drupal.org/node/2718229 for more information about composer dependencies.
Besides of that, this version fixes some bugs and includes some minor improvements.
Pluggable Backend Architecture: Data storage can work natively with Postgres/PostGIS databases via a plugin. Ships with a default storage mechanism that is suitable for any Drupal-supported database, without any db-enhancements.
Added a new submodule, geofield_map, which provides a basic field formatter and views integration to geofield. The goal is to have something that can easily be used as a rapid-prototyping tool, or as a example of how to write custom integration with geofield.