You can email Fundamental Logic and ask them about their stock level - no one here is affiliated with them, so we can't say for sure. When I ordered mine, it showed up as 'in stock' on their page, so as far as I know, they list their stock when they have it.
On a prebuilt MPGuino, dcb would have to load the metric version before shipping it out in order to have metric units. On the fundamtal logic board, you can load whichever version you like via USB and the Arduino software.
__________________
|