Awesome update. Can't wait until libsass supports Sass 3.3!
Bourbon has libsass support with version 3.x, which is being maintained alongside 4.x. There’s feature parity as much as possible. You should be able to
gem install bourbon -v 3.2.1if you’re using sass-rails, or
npm install thoughtbot/bourbon#v3.2.1or
bower install bourbon#3.2.1if you’re using node-sass.
So does Bourbon 3.2.1 get all of this stuff?
I remember reading that they were using some Sass 3.3 features to for some of the new Bourbon features.
Yusssss new flexbox mixins.
I currently use Compass whenever creating new products. Any reason Bourbon is worth switching to?
If you use Autoprefixer there isn't much need for Compass unless you use sprites. Bourbon has a few nice utilities I find useful, and has much nicer docs to find what you need.
Also if you are using Grunt, switching to regular Sass 3.3 compiling let's you use source maps which are omgwtf amazing for development. In addition is the new Sass 3.3 "map" feature which is also really useful.