New features
Deprecated features in PHP 7.0.x
Migrating from PHP 5.6.x to PHP 7.0.x
PHP Manual
Changes in SAPI Modules
FPM
Fixed bug #65933 (Cannot specify config lines longer than 1024 bytes).
Listen = port now listen on all addresses (IPv6 and IPv4-mapped).
New features
Deprecated features in PHP 7.0.x
Migrating from PHP 5.6.x to PHP 7.0.x
PHP Manual