I seriously doubt that we'll see a 45ACP Shield. The 9mm shield and 45ACP xds are quite different shooters. I opted for the XDS as most say the 40 shield is very snappy. Comparing the two, the shield 9mm is much more enjoyable to shoot and may well be used for "other than essential" shooting. My XDs will never be shot for "fun".. Just enough to ensure functionality and carry ammo proofing.. JMO.. Ron