The different support level presented in the table are defined as such:
Future
After a new version branch gets cut, creating new Release Candidates to allow the community to test the upcoming version is very important. New RC releases are done at a high pace, as soon as viable.
Active
Stable releases in active support receive frequent updates. Latest stable has the highest priority, and at the start of its stable cycle (right after .0 is released) multiple patches will be done as soon as possible to stabilize the version and ensure a good upgrade experience to the community.
End of Cycle
A version in this support bracket will receive less patches, unless some important regressions need to be addressed. Once a next version becomes the new latest stable, before the version in EoC moves over into Unsupported one last patch released will be produced with the latest receive pick requests.
Unsupported
When a version is in the unsupported stage, no new released are to be expected. Only very important regressions might create exceptions to this rule; it is recommended that codebases using an unsupported version upgrade as soon as possible.
In order to support users upgrading React Native versions, we’re committed to maintain the latest 3 minor series (e.g. 0.78.x, 0.77.x and 0.76.x when 0.78 is the latest release).
For those releases we’ll be publishing regular updates and bug fixes.