Several new experiments were presented at the The XIth International Conference on Heavy Quarks and Leptons, Prague, June 2012. They mainly belonged to the area usually called Intensity Frontier (or sometimes Precision Frontier).
The main rationale for these experiments is to probe New Physics in an indirect way: studying the rare and forbidden processes with the unprecedently high precision and thus unveiling the scale and nature of processes unaccessible by current High Energy experiments. The proposals were coming from several areas (Kaon Physics, B-meson experiments, neutrino projects) and are of different stage of approval or construction.
One long-term project has been introduced: the Fermilab Project X.