CakePHP 3.7 will be an API compatible release with the previous version of 3.x.
3.7 is the last release that can add deprecations that will be removed in 4.0.0. New hard deprecations should target smaller features. Larger, more frequently used features could be deprecated if necessary, but those deprecations will not be removed until 5.0
- Add a curl adapter for Http\Client. The stream adapter has problems in hosting environments that disable 'url fopen()' and https with proxies. https://github.com/cakephp/cakephp/tree/3.7-http-client-curl
- PSR16 Compatible cache adapter layer allowing CakePHP caching to be used where PSR16 interfaces are required.