While ASRock showed off a Mini-PC utilizing this motherboard at CES this year, it wasn't clear then if the motherboard would be available for purchase by itself. Well, today ASRock is announcing the standalone H110M-STX motherboard! While John may be dubious on the use case for Mini-STX, I think there's modding potential for ultra small gaming builds by way of M.2 to PCIe slot adapters (which hopefully will work with this board).
Read more here.