According to Chinese analyst Pan Jiutang, the Snapdragon 830 will include support for up to 8GB of RAM.
The analyst claims Snapdragon 830 will carry the codename msm8998 and is likely to debut next year. Other than that, there isn’t much else we know about the chipset. A rumor in the past did suggests that Qualcomm may go with a 10nm manufacturing process to build the chip, but it isn’t likely that we may see that happening if Snapdragon 830 will indeed launch next year. Samsung isn’t expected to ramp up its 10nm process by the end of 2016, which means a 10nm chip from Qualcomm may only debut by Q1 2017 at the earliest.
However, as far as the RAM goes, we may very well see 8GB RAM chips show up by next year as Samsung announced recently that it would soon begin mass producing 6GB LPDDR4 memory modules for smartphones.