One of the things that is continually great about PostgreSQL is how they consistently deliver a solid v1 of new features that are reliable, well engineered, and semantically sane. I'm sure partitioning will be another example of this kind of thing where in a few years you will have both all the bells and whistles and also firm footing in solid RDBMS engineering.
As a nit, postgres has had tablespace style partitioning for some time, but these feature adds much more control. Not sure if that was your meaning or not.