[lisper]

I wouldn't really call myself an expert so take this with an appropriate quantity of NaCl, but AFAICT yes, what is new here is an experimental violation of the Bell inequalities with a "single particle" rather than an EPR pair.

Note that the reason I put "single particle" in scare quotes is that there really is no difference between a "single particle" and an EPR pair. Both are single (non-separable) quantum systems. The only difference is that the "single particle" is in a state that constrains it to deliver its energy at a single location whereas the "EPR pair" can split its energy between two locations. So a "single particle" is really just a special case of an EPR pair, which is in turn a special case of an EPR N-tuple.