PHP 7, a major update to the server-side scripting language due next year, will offer performance improvements and more capabilities, along with deprecation of some existing features.
http://www.infoworld.com/article/28...ll-speed-ahead.html#tk.rss_infoworldtechwatch
For PHP 5.7 or 7.0 aka PHP NG, the install method should be same install method work around as for PHP 5.6 PHP-FPM - PHP 5.6 support testing for .07 betas | Centmin Mod Community - manual download to /svr-setup in naming format of php-5.7.0.tar.gz then running menu option 5 to upgrade PHP and specify PHP version = 5.7.0 or 7.0.0
https://community.centminmod.com/threads/php-5-7-phpng-support-testing-for-centmin-mod-betas.892/