MiTAC PD10AI MT is the one and only readily available Apollo Lake Thin mini-ITX motherboard. Available for $170 it features Intel's Celeron N3350, M.2 storage and two Ethernet ports.
So why spend so much money when Apollo Lake options can be found much cheaper? Being so thin, the PD10AI MT can fit inside the smallest cases like the minuscule SilverStone PT13. But first and foremost, industrial hardware tend to be less prone to planned obsolescence.