Due to an applied patch that optimized/fixed how ruby required libraries, the performance of my test suite was significant (~2 times.)
Below are the benchmarks from my test suite before and after the upgrade. The only issue was that RVM did not have support for the latest patch version so one pull request later and we are good to go.
Ruby 1.9.2-p290 real 6m14.266s user 2m17.930s sys 0m9.587s UPGRADE TO ruby p318 real 2m22.649s user 1m15.867s sys 0m8.126s
My continuous integration server will be really happy now as well!