Hi,
If you haven't noticed yet, the RaspberryPi 3 was unveiled today. It sports a quad cortex A53 arrangement:
http://hackaday.com/2016/02/28/introducing-the-raspberry-pi-3
I guess that settles where the community will flock for 64bit ARM. Hobbyists and Makers can now get a small and affordable SBC, that at the same time is compliant with THE gold standard for community boards: RPi.
Cheers
Thomas