While I don’t yet have my hands on a quad-core Cortex-A7 Raspberry Pi 2 board, there’s already many running benchmarks with it using our open-source automated testing software. Some of the shared RPi2 benchmarks done by the community include:
1502103-KWAR-140722031 – A comparison of the Raspberry Pi B, Raspberry Pi B+, and Raspberry Pi 2.
1502091-LI-RPI29666253 – Raspbian with various tests.
1502110-LI-RASPBERRY41 – The Raspberry Pi 2 with Debian GNU/Linux 8 Jessie.
1502113-LI-TEST1010676 – The Raspberry Pi 2 with Arch Linux.
1502110-LI-RASPBERRY41 – The Raspberry Pi 2 overclocked to 1075MHz.
There’s also other Raspberry Pi 2 benchmarks on OpenBenchmarking.org if searching for BCM2709.