VoCore breakout board will have such features:

1. two ethernet ports.
2. jtag port, 2.54mm pins, with 10k ohm pull up resistors.
3. gpio port, 2.54mm pins, with 4.7k ohm pull up resistors.(some for boot stripe has pull down)
4. reset button.(with 4.7k ohm pull up)
5. spi port, 2.54mm pins.
6. micro USB power in.
7. uart full port, 2.54mm pins.
8. usb 2.0.
9. size about 6cm x 4cm

consider to add to this breakout board:
1. arduino chip and pins export.
2. on board usb2ttl chip.

Former layout: