DrupalCloud has supported Drupal Services Module for D6 (json_server) and D7 (rest_server). However, web services for Drupal has turned to a new direction (RESTful Web Services, https://www.drupal.org/project/restws) and for Drupal 8, RESTful Web Services is in core. Therefore, the future of this project is to support the new direction.
On the other hand, the development of this project has been based on ADT; and most of the code was built from scratch. In the past a few years, Android development has been evolving. Therefore, the future version of this project will support Android Studio and Gradle. More importantly, instead of writing code from scratch, DrupalCloud probably will look into use some popular frameworks.
This release concludes all the legacy support.