Especially when there is major mayhem to e expected - a change in the major version number does not occur without reason.
history tought us to be very carefully on upgrading to new board packages. More often new things break than old problems get fixed...
Given a version number MAJOR.MINOR.PATCH, increment the:
MAJOR version when you make incompatible API changes,
MINOR version when you add functionality in a backwards compatible manner, and
PATCH version when you make backwards compatible bug fixes.