Become a strongest PHPer! New language and [Hack] is?

Mr.yone098 posted a summary of new programming language “Hack” at tech site “Qiita”.
Hack is a new programming language for HHVM which interoperates seamlessly with PHP.
Hack reconciles the fast development cycle of PHP with the discipline provided by static typing.
Mr.yone098 provided a HHVM Hack trial server on AWS. Let’s have a look.
http://qiita.com/yone098@github/items/7ff3616030e8d19400a7