In addition to a large number of bug fixes and minor enhancements, this release includes improvements to lattices and materialized views, and adds a builder API so that you can easily create relational algebra expressions.
Read more about the [builder]({{ site.baseurl }}/news/2015/06/05/algebra-builder/), [relational algebra]({{ site.baseurl }}/docs/algebra.html), and [lattices]({{ site.baseurl }}/docs/lattice.html).