The gem 'rails-api' existed before, yes, but this announcement is about the Rails API project.

1. rails-api (the gem) forms the core. 2. ActiveModel::Serializers is now under the same organization, and making them work well together is a big priority. 3. Other gems/JS libraries may be built as we see fit, and put under the project umbrella as well. 4. I am now in charge of it all. ;)

> Why is this is another project and not part of actionpack?

Both of these gems were originally in HEAD Rails, but David reverted them.