The main difference appears to be about deprecation.
From
Minor version Y (x.Y.z | x > 0) MUST be incremented if new, backwards compatible functionality is introduced to the public API. It MAY be incremented..
To
It MUST be incremented if any public API functionality is marked as deprecated.
Plus a new section on how to handle deprecating functionality.
Comments
The main difference appears to be about deprecation.
From
To
Plus a new section on how to handle deprecating functionality.