When rumors about the Galaxy S IV started coming out, speculators inadvertently thought this was secretly referred to by Samsung as the Project J. Then, when the real code name for the Galaxy S IV project came out as Altius, tech enthusiasts started using the term and dismissed "Project J," all the while thinking they were the same thing. Recently, however, the talks of having a "Project J" that does not pertain to the Galaxy S IV has been revived and along with it, new ones that Samsung is also working on, a "Project J Mini", which people believe to be a version of the Galaxy S IV and "Project J Active", believed to be a watch or a media player.
No reports exist yet but for all we know, it could be as awesome as the Galaxy S IV, only smaller or an entirely different and disappointing device, much as the Galaxy S III Mini is compared to its "bigger brother". No word as well if these new devices will be compatible with the wireless charger that Samsung introduced at the FCC.