We have:
Firefox Mobile on ARMv6 processors February 17th, 2012
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Now what about Firfox Mobile on the A15 Dual processor?
ARM Announces 64-Bit Processors Coming in 2014
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ARMs Cortex-A50 series of processors are based on the ARMv8 architecture and take what ARM describes as a fresh approach to 64-bit compute. These chips are designed to be low-power, which means theyll be perfect for smartphones, tablets and beyond.