[dubcanada]

HHVM is just a PHP JIT compiler. It's not a different language.

That is Hack.

[yc1010]

I wasn't clear enough I now realize in my post, I meant supporting Hack language that comes with HHVM (type annotations etc) in PHP Storm

[Mahn]

But those are two things. You can move to HHVM and not use Hack.