the power store demo website:
is in place to demonstrate all of the available functionality of power store for just this purpose.
the update to include foreign currency is currently going through Quality Assurance testing.
the last update i got on a release date was the middle of this week, but that is not a solid date that i can promise you. there are always unforeseen circumstances that can come along and push that date out further.
I can only tell you that we are working on getting this update to power store out as soon as possible.