"in-place", as long as you have the necessary prerequisites available.
Required software:
-* Web server with PHP 5.5.9 or higher.
+* Web server with PHP 7.0.0 or HHVM 3.18.5 or higher.
* A SQL server, the following types are supported
** MySQL 5.5.8 or higher
** PostgreSQL 9.2 or higher