For those interested in what's going on in the world of Hack (the Facebook-created language based on PHP) check out this "community roundup" with information about and links to some of the latest happenings.
In the weeks since the Hack open source launch and the Hack developer day, there has been a lot of information, code, blog posts, etc coming from our nascent community. To us on the team, it's been incredible and encouraging to see the community reception to Hack. Here are some of the highlights of the things we've seen come out of our community. (And we almost certainly haven't seen everything, so please let us know in the comments what we've missed!
They share several related GitHub projects (including the Hack/HHVM support on Heroku), a few presentations about installation and experience with the tools and a few blog posts wrapping up their Hack dev day and an article from FastCompany about Hack and its motivation