Rightware has developed BaseMark GUI, a new 3D benchmark for mobile devices. You can check it out over at AnandTech.
Basemark divides benchmarking into two categories - feature tests and the final overall user interface test. Up first are the feature tests. These are named animation, vertex streaming, texture streaming, and alpha blending as shown in the menu above. Each tests a different collection of what Rightware believes are representative graphics tasks that will be leveraged in user interfaces moving forward. The first item in that test menu screenshot above - 3D UI - is an overall graphics performance test designed to simulate a completely 3D user interface with example application interfaces. It's one of the heaviest 3D benchmarks I've seen yet.