Don't panic, guys. He's actually correct in saying that the "GPS Visualizer" will not be available in the U.S., as it's currently only compatible with a special version of the FR-S that's only being sold in Japan for now.
However, the GPS Visualizer is what I talked about here, it is not the same thing as the Course Maker.
From reading the article linked above, I don't think the author was at the Willow Springs event where the GPS Visualizer was debuted, as he's using the name interchangeably with the Course Maker. It looks like he's assembled that article from content from content that he has read from various sources.
Although SCEA was clear that the Visualizer is only compatible with the Japanese FR-S equipped the CAN-Gateway ECU, they said nothing about any geographic limitations with the Course Maker mobile app.