Progress will attempt to deliver a patch on top of an older version in cases when business conditions sometimes prevent customers from upgrading to a particular version containing a fix. Patches can be produce patches for a limited number of versions back from the current one, as specified in your support plan. For example if the support plan states you are eligible for receiving patches for up to 3 point versions back, and the current version is 6.4, you can request patches for versions up to 6.1.
The produced patches are based on the latest hotfix build for your NativeScript framework version. Patches have passed our fully automated test suite, which includes thousands of functional, integration, unit and performance tests. The actual bug fixes for which the patch is produced have also passed strict manual quality assurance and performance tests. These builds have not passed our full manual regression testing cycle that we do before each official release. The patch builds not include breaking API changes, database changes and high-regression potential changes or fixes, and upgrading to them should be seamless. Upgrade from these builds to the consecutive official release is fully supported.
Please note that due to code refactoring it’s not always possible to apply a patch to an older version. Nevertheless, we stand committed to meeting your business needs and if it is not possible to produce a patch we will advise you on the best path to address the issue.