The PHP.net site has posted about the latest beta release in the PHP 5.6.x cycle - PHP 5.6.0beta3. This is a development release, so do not use it in any production facing applications.
The PHP development team announces the immediate availability of PHP 5.6.0beta3. As we entered the feature freeze with beta1, this is is a bugfix-only release. All users of PHP are encouraged to test this version carefully, and report any bugs in the bug tracking system.
Changes in this release include fixes to the core engine, the date handling, GD functionality and an OpenSSL-related fix. You can download this latest release from the PHP QA site or here for Windows users.