Just announced on the PS Blog is that those of us in the US will finally be getting the Cuboid DLC today.
Released a few weeks back in Europe, the pack includes 33 new levels and a custom level editor, as well as a handful of new trophies. The level editor allows users to not only create infuriantingly hard levels, and post them online for the rest of the world to enjoy. Although the level editor has had some issues in Europe, the developers have assured us that those issues have been ironed out since.
This amazing pack will run you a mere $4.99, so get going!