It seems as though it will. I read somewhere in the Dev Center that an app called "foobar" can now be accessed via "foobar.herokuapp.com", which uses an advance

It seems as though it will. I read somewhere in the Dev Center that an app called "foobar" can now be accessed via "foobar.herokuapp.com", which uses an advanced new HTTP stack that supports async and chinned responses too I believe. I don't remember the exact page I read that, but take a peek in the Dev Center for more info.