According to the last rumor, there would be delayed in Sony A5100 successor (Sony A5300) announcement, but now a rumor recently flashed over the web suggests that Sony might have cancelled the A5100 launch, because all the sensors will be needed to fulfill the demand for the a6300 . It was rumor that Sony would announce A5300 in June, but Kumamoto Earthquake disrupted its schedule and Sony had to rework probably from very begin.
Source 1: At least one of the new / planned cameras have been scraped. The already made and delivered aluminum body parts will have to be shipped back from the assembly factory to a scrap metal junkyard.
Source 2: Sony canceled a lower end super compact APS Camera that was supposed to follow the a5100. The reason is that all the sensors will be needed to fulfill the demand for the a6300.