Devices with a 64-bit Tegra 6 could launch before the end of 2014.
64-bit Nvidia Tegra 6 "Parker" Chip May Arrive in 2014 : Read more
64-bit Nvidia Tegra 6 "Parker" Chip May Arrive in 2014 : Read more
What about Nvidia’s Tegra? Confirmed by Nvidia, the follow-on to Nvidia’s Logan will be 64-bits and will be a custom core like Apple’s Cyclone
It could be all of those, but what Nvidia has confirmed to me is that the Logan SoC follow-on for mobile devices does have a custom 64-bit processor core, based on Denver.