Are there lore that coincides with kayn? like galio=demacia/rakan&xayah=vastaya?

Hey riot!!

like the title, is there going to champs that will be retcon alongside kayn?? A new varus,darkin,aatrox,zed and shen lore?? or not? :(

If not, it will be a missed opportunity specially varus because the special interactions with him(or rhaast) will be non sense since varus lore is outdated(specially we need a VO) or is it going to be published in the later days of patch of 7.14?