http://math.ucr.edu/home/baez/physics/ParticleAndNuclear/tachyons.html Theroetical counts!
Our present theroys wrap very poorly arond anything traveling faster than light, but if mass = 0 the rules become blurry and nutrinos are very very small mass.
If a process we expect to produce an ordinary nutrino produces a faster than light particle instead then the theroy involved needs examination, perhaps revamping.
Actually if it requires so much as a new feild of math you could understand the discovery to be wonderfull.