In addition to the four classical states of matter (solid, liquid, gas, and plasma), a team at the University of Colorado Joint Institute for Lab Astrophysics has recently discovered what they believe to be a new state of matter, called Dropletons.

This is certainly an interesting discovery, but it appears as though there are already many other non-classical states of matter as well, so maybe not a totally earth-shattering discovery.

http://en.wikipedia.org/wiki/State_of_ma...

Still, pretty interesting.