Thankfully the new functionality is being achieved through new options for the existing pie chart, which means that those new features are available in R via googleVis as well, without the need of writing new code.
Doughnut chart example
With the German election coming up soon, here is the composition of the current parliament.
R version 3.0.1 (2013-05-16)
Platform: x86_64-apple-darwin10.8.0 (64-bit)
attached base packages:
 stats graphics grDevices utils datasets methods
other attached packages:
loaded via a namespace (and not attached):
 RJSONIO_1.0-3 tools_3.0.1