At the moment, string theory is purely a math game, and nobody even knows the exact equations that govern existence. The best that has been done so far is an approximate solution to an approximate equation.
It holds a lot of promise: we don't want to overlook this theory because it is possible that it might eventually be shown to be right. Of course, if it's wrong, then it's wrong.
It does predict stuff: it predicts GR, QM, standard model, all of that goodness that is experimentally verified with rigor. The only problem is finding evidence for the deviation from the original models (eg GR corrections to hydrogen atom, QM corrections to black holes).
It is also officially named "superstring theory" because the theory includes another symmetry known as "supersymmetry". This supersymmetry requires the existence of a superpartner to all the particles currently documented by the standard model. Problem: no such particles have been detected yet. Solution: wait for larger particle accelerators.
>>26
All research requires a "real soon now". If they have something in their hands already, then it's not research!
>>36
It's only a name change...