Version Numbers

MongoDB uses the Odd-numbered versions for development releases.

There are 3 numbers in a MongoDB version: A.B.C

• A is the major version. This will rarely change and signify very large changes
• B is the release number. This will include many changes including features and things that possible break backwards compatibility. Even Bs will be stable branches, and odd Bs will be development.
• C is the revision number and will be used for bugs and security issues.

For example:

• 1.0.0 : first GA release
• 1.0.x : bug fixes to 1.0.x - highly recommended to upgrade, very little risk
• 1.1.x : development release. this will include new features that are not full finished, and works in progress. Some things may be different than 1.0
• 1.2.x : second GA release. this will be the culmintation of the 1.1.x release.