There's a lot of talk going around that Qualcomm's latest flagship chipset – the Snapdragon 810 – has overheating issues, which may delay the launch of the flagship smartphones this year. Qualcomm, of course, refuted this and the rumors didn’t stop the announcements of the LG G Flex 2 and the Xiaomi Mi Note Pro, both of which are powered by the chipset (though they are yet to launch commercially).
Nevertheless there's a second report now that Samsung will ditch the S810 in favor of its own Exynos designs. Bloomberg quotes unnamed industry insiders, who say that Samsung has already made the decision but has not made it public. Stock of both Qualcomm and Samsung took a hit.
Of course, Samsung would prefer to use its own chips as much as it can. The last few generations Samsung had to use Snapdragon due to increasing demand for LTE connectivity and Qualcomm's dominance when it comes to modems. Samsung has since solved the LTE issue and already has a chipset that will deliver the quad Cortex-A57 and quad Cortex-A53 that the Snapdragon 810 promises, but with a Mali GPU instead of Adreno.
The Samsung Galaxy S6 is expected to launch soon after it's announced at the MWC, which spans late February/early March. Whether because of Snapdragon issues or to improve its self-reliance, Samsung has invested $15 billion for a new factory near Seoul to manufacture new chipsets that will likely go into the company' new flagship.
Both Qualcomm and Samsung declined to comment on the Bloomberg story.