300PPI is not the measurement for what a 'retina display'. Jobs talked about a "magic number" around 300PPI
300DPI is the magic number and the self-proposed required measurement for Retina display(TM), for the viewing distance quoted by Jobs for the phones. While it's a silly marketing word (hello "Emotion Engine") it's not entirely without merit. My question was a hypothetical joke that if it's 299.XX, will Apple round up the number to make it 300DPI and call it a Retina.