The document summarizes updates and new features for CakePHP version 3.0 and beyond. It discusses the large number of breaking changes in 3.0.0, challenges with upgrading, and areas that went well like community involvement and documentation. It outlines the future release schedule and previews some new features including mailers, console improvements, ORM enhancements, ElasticSearch integration, and PSR-7 support. It notes efforts to maintain backwards compatibility within the 3.x series and questions about supporting older PHP versions. The document encourages community involvement to help with upcoming CakePHP releases.
29. Backwards
Compatible
Public methods wont change their signatures.
Public properties will continue to be available.
Protected methods may change signatures.
Protected properties may change.