...but read a bit more carefully. They've detected the other types of neutrinos directly now thanks to the new detector. That was the whole point of Sudbury. Different neutrino detectors are sensitive to different neutrino energies - none prior to GALLEX, for example, could detect lower energy neutrinos from proton-proton reactions [which make up the majority detected by the newer systems.]

The original chorine 37 detector could only pick up the +MeV energy neutrinos produced by very minor fusion reactions - Beryllium reactions I think. Proton-proton reactions have a max. energy of just 0.42 MeV and so they just weren't seen. GALLEX saw part way into the low energy scale and saw a count of ~80 against the expected ~120. I think SuperK confirmed that, but neither had enough "bandwidth" to see them all.

Now SNO does and it has seen them all... electron, muon and tauon neutrinos.

Adam