We distinguish between standard releases and maintenance releases.
A standard release provides new features and functionality as well as improvements and fixes to a previous release.
Standard releases have the format
<major>.<minor>, e.g. 9.12, 9.13, 9.14.
A standard release with general availability (GA) is a so-called Private Edition (PE) release. Currently, every fourth standard release is also a PE release.
Info: From 2019, Private Editions will only be published on a quarterly base.
A maintenance release provides improvements and fixes to a previous release. Maintenance releases do not contain new functionality. In general, Cumulocity maintains the current and the previous PE release.
Maintenance releases have the format
<major>.<minor>.<maintenance>, e.g. 9.12.1, 9.12.2, 9.12.3.