Right! To put this in other words, we already had Mesons and Baryons (two- and three-quark bound states), and now we have Pentaquarks (admittedly less creative

Right! To put this in other words, we already had Mesons and Baryons (two- and three-quark bound states), and now we have Pentaquarks (admittedly less creative name). It's very exciting and hopefully we can learn more about QCD by observation of this and other new bound states. As jessriedel mentioned, we currently have no way to compute these states efficiently, and the computing power does not exist (yet?) to evaluate such systems on the lattice. Having this new entry in our "answer key" will hopefully lead to new insights in about the fundamentals of the strong force and/or at least some new tricks to compute bound states.