You will be able to switch back to PHP 5.4 in the PHP Version Selector which can be applied on a per-domain basis, so customers with multiple websites can choose to run one in one version of PHP and another site in another version as needed. You can select from version 5.4, 5.5 and 5.6, the latter of which will be supported until the end of 2018.
For more information see: http://php.net/supported-versions.php
Bazar, Sentyabr 4, 2016