After it became clear that Samsung is still producing the A7, and the Koreans chimed in they are all for doubling the mobile chipset bits, it was a matter of time before we learn such an Exynos is indeed in the pipeline, and we might see it in the next flagship, the Galaxy S5. This chip is meant for smartphones as well as tablets, said the Samsung source, cited by the publication...
Source: http://www.phonearena.com/news/Samsung-in-final-stages-with-a-64-bit-Exynos-processor-prime-candidate-for-the-Galaxy-S5_id47665
Source: http://www.phonearena.com/news/Samsung-in-final-stages-with-a-64-bit-Exynos-processor-prime-candidate-for-the-Galaxy-S5_id47665