I haven't heard any more updates on finding Mallory's camera, and I'm sure it would have made headlines because of the possibility the film contains evidence Mallory beat Hillary to the peak. The party that found his body searched the area, but once they left the mountain, the likelihood of that camera turning up dropped to nearly nil -- first, because though there are many people up and down Everest any given year, few of them can spare energy or supplies for anything other than the climb (and they're there to summit the mountain, not to search for a tiny black box in a talus field of rocks fifty times its size), and second because, with the removal of the body, the best reference for the most likely place to look is gone.
Perhaps in another century or two, Star Trek level technology will permit finding the camera -- and even recovering images from the film, if anyone even remembers what film photography was in the 22nd or 23rd century...