Roadmap of Swagger Codegen - When covering PHP 7+ Client

Hello, 

I looked for roadmap contents of next Swagger Codegen releases, but I didn't find a reference to the creation of PHP Client code compliant with PHP 7+ versions.

Someone knows if has planned or when it will be upgraded the PHP client code generation from PHP 5 to Php 7+?

Thank you a lot,

Riccardo