You can now use four new diagonal shapes in your workspace - rectangle and rounded rectangle variants with a diagonal line running either left-to-right or right-to-left. These work just like the existing cross shapes but with a single dividing line, giving you a clean way to split a node into two color zones.

We've also added a double border style to all nodes and group nodes. Select "double" from the border style picker to render two parallel lines around any shape - including complex shapes like hybrid arrows, ovals, and cross rectangles. The double border is fully supported in PowerPoint exports too.