Here's the latest from Schroth. I spoke to Mike yesterday. Testing with an BMW E9x seat has been completed and the seat has passed (this took a long time as Germany is no longer conducting the testing there, so it was done in the US). The Schroth Quick-Fit and most likely Quick-Fit Pro will be manufactured here in the US. Production will start this year and should be available before the year is out.
They are expecting pretty good demand for this harness, but they recommend that you check their web-site for updates.