The double slit experiment continues to be the subject of many of those who are trying to "understand" quantum mechanics. Philosophers especially seem bent on trying to make some sense out of it, and crackpots use it as "evidence" for this wild metaphysical mumbo jumbo.
Physicists, on the other hand, continue to test and study it one aspect at a time and systematically tries to find the answer to very definite questions. A case in point is this latest report. A very meticulous study on whether photons have an advance notice on how it is going to be measured seems to have ruled that out in a very clever way. Unless there are signals that are traveling faster than the speed of light, photons have no idea of the setup they will encounter and simply behave as they should when they it.