Just a heads-up Signal One has released this on BD in the UK, and it's region free. I watched it the other night and it's not a new 4K transfer, but it's not bad -- even with its age, the HD master has decent detail, and isn't expensive. If you don't want to wait for whoever picked the title up for a 4K remaster (Criterion most likely seeing as Twilight Time had to scuttle their announced 2019 release), it's a passable disc with a high bit-rate.