No points changes for Kroxigor in GH2018. No Warscroll update as far as I can see either; instead there's a section of GH2018 covering the summoning changes that just says all the Summoning spells from the Seraphon Battletome are not longer used.
They might still come. I think AoS is on a good way with quite some updates between the major releases. ...But then they might phase out Kroxigor, who knows. "Always in motion is the future."