Release Notes
Always install the latest, stable version of MongoDB. See
Version Numbers for more information.
See the following release notes for an account of the changes in major
versions. Release notes also include instructions for upgrade.
Current Development Series
Other MongoDB Release Notes
Version Numbers
There are three numbers in a MongoDB version:
<major version number>.<release number>.<revision number>
The second number, the release number, indicates release stability. An
odd release number indicates a release in a development series. Even
numbered releases indicate a stable, general availability, release.
Additionally, the three numbers indicate the following:
- <major version number>: This rarely changes. A change to this number
indicates very large changes to MongoDB.
- <release number>: A release can include many changes, including
new features and updates. Some changes may break backwards
compatibility. See release notes for every version for compatibility
notes. Even-numbered release numbers are stable
branches. Odd-numbered release numbers are development branches.
- <revision number>: This digit increments for every
release. Changes each revision address bugs and security issues,
Example
Version numbers:
- 1.0.0 : First stable release
- 1.0.x : Bug fixes to 1.0.x. These releases carry low risk. Always
upgrade to the latest revision in your release series.
- 1.1.x : Development release. Includes new features not fully finished
and other works-in-progress. Some things may be different than 1.0
- 1.2.x : Second stable release. This is a culmination of the 1.1.x
development series.
