I think I remember seeing something on i-Club about the R1. I'm pretty sure it was mostly cosmetic stuff. A standard spoiler & 17" wheels, a special edition color, some "R1" floor mats, & exterior badging.
Only available in Canada. 150 made. Similar to basic WRX. Only available in sonic yellow. Only diffs are badging and wheels and some minor interior stuff. I hope you did not pay much more than a standard WRX costs. May maintain value better than std WRX due to ltd production (supposedly produced to higher tolerances than std WRX but basically the same performance wise)