Really? Nolan stated in interviews that he didnt want to use IMAX has the cameras were to bulky for the stunts
He's using standard 65mm 5-perf, which isn't IMAX stock, which is 70mm 15-perf, so you won't get the vertical height or changing aspect ratios, it's just much higher film quality. So it's similar, but not exactly. I'm really excited to see it.