Samsung Galaxy Note 4 is still very topical phablet but as time goes by, and summer is on the horizon, should already thinking about his successor. Galaxy Note 5 will reportedly premiere of the new Exynos 7422 with a completely different architecture, and is saved in the dual edge version modeled on Galaxy S6 edge.
Although the information is not confirmed, in these smoke signals and almost certainly there's fire. From Samsung's coming news about Galaxy Note 5 and the new chip by Samsung agreed so that integrates exactly all the components in one package. By the packaged CPU, GPU, RAM, internal memory and LTE modem in one package, in theory, will remain more space for other components - read battery. Apparently under test version Note 5 to 2K or Quad HD display but also those with even crazier and more obsolete 4K display.
I will emphasize once again that although SamMobile otherwise fairly reliable source of information about Samsung, the news is not confirmed 100%
If all goes as far, Note 5 we can expect the beginning of September at the IFA in Berlin.