This is a new technique, combining the idea of knitting 2 yarns and alternating every 2 rows, with doing the same from the left. Result: 2 yarns on the right changing every RS row + 2 yarns on the left, changing every WS row. To do this knit each row double stranded (DS) with a yarn from the right and a yarn from the left. This crates a rich fabric without much color work. The photos unfortunately fail to show its full beauty.
Free instructions here.