Continuing the discussion from Change to PSR-2?:
Since there is currently an entrance vote on this in PHP-FIG (and I just voted +1 for Neos): We should go for PSR-N as soon as it is done… Extended Coding Style Guide PSR by michaelcullum · Pull Request #611 · php-fig/fig-standards · GitHub
This PSR is an extension of PSR-2, and therefore also an extension of PSR-1. It shall be included in the document that compliance with PSR-N implicitly requires compliance with PSR-2 and PSR-1.
This PSR will include coding style guidelines related to new functionality added to PHP after the publication of PSR-2; this includes PHP 5.5, PHP 5.6 and PHP 7.0.