He did type Region 1 Blu-ray and Region 2 Blu-ray which Blu-ray disc dropped the numbers for the regions and just went for A, B, C. But a lot of us knew that. Must have been a carry over regarding typing a lot about DVDs.
Looking back, I did mean to type Region A and Region B as I was indeed referring to the Blu-ray. That was just an oversight on my behalf whilst writing.