The updated version was just released to fabrication! V0.2 changes include:

• Size reduced (1.5 x 2.0 inches) to comply with the Supercon Add On Contest rules.
• Still requires a badge/host MCU to control the SAO (or use my tiny SAO Demo Controller).
• Added edge-connect option for SAO header mounting.
• Removed some prototype features that aren't needed anymore, simplified pin usage on the IO expander.
• Refined core memory weaving outline and make screen protector easier to install.
• Add I2C address on the front! Still adjustable with solder jumpers on the back.
• Add alternate power input (square pin in the open-end wrench, lower right) to avoid overloading SAO power rail.
• Define tooling pin locations for fabrication.