I think ASUS will definitely release MAXIMUS X EXTREME.
But not at launch. The best mobos are always late-gen, their refinements are largely based on feedback from earlier stuff, Intel and OEM fixes, and lots of time dedicated to engineering R&D (evaluation/redesign/prototyping/testing/testing/testing). APEX was probably prioritized because (as usual) ASUS wants their shot at dominating and advertising fastest-ever new overclocking records. CODE and FORMULA are probably going to be the best available for a while. I expect EXTREME maybe 6 months away.
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