With The Force Awakens getting its own canon Incredible Cross Sections, doesn't that legitimize the other ICSes? Afterall I doubt Disney is going to go through and release a new one for each movie.
__________________ "Vader's pulse and breathing were machine-regulated, so they could not quicken; but something in his chest became more electric around his meetings with the Emperor; he could not say how. A feeling of fullness, of power, of dark and demon mastery -- of secret lusts, unrestrained passion, wild submission -- all these things were in Vader's heart as he neared his Emperor. These things and more."
Seeing as not even the novelisations are strictly canon, I doubt it, I don't think Disney wants to be tied down by any of the old material, that said as far as the technical info in those guides is concerned, they are pretty much being recanonised.