OPERA reports something seminal:
Neutrino speeds superluminal
and so by extension
some other dimension
might carry this law breaking particle.
On the 18th November 2011, OPERA released an update to their original findings. The new results were from an experiment set up to repeat the original one, but with additional steps to reduce the possible margin of error. These new results backed up the original anomaly.
Jim Al-Khalili wrote a great piece on what faster-than-light particles could mean.