3V is significantly tougher than Magnacut, so the spec for that steel, for this knife remains unchanged. DEK2 is meant to be an attainable, affordable, easy to maintain knife for the masses. AEB-L would also be an appropriate choice, as it is very tough- although edge holding isn't quite as good at a reasonable hardness
DEK3 was designed for Elmax originally, but will definitely get the Magnacut spec. If there are future runs of DEK1s, I would endorse changing the spec to Magnacut for them going forward as well