My predictions:
1. Lucis tool will be the upgrade for Supra relic tools, rather than a separate tool like the Artisan ones. As Wadoka pointed out, "Lucis" is a Latin word. "Supra" is also a Latin word. Given the similarity and how they have done naming for the relic weapons, it makes more sense to me for Lucis to be part of the relic tool progression, rather than a separate thing like Artisan.
2. Artisan body piece will be unveiled, and will be craftable with 3 Ehcatl Sealants and 1 Mastercraft Demimateria. I predict they will mirror what the Forager set is already doing with the body piece, since everything else between the two sets is comparable.
3. The "additional rewards" being added to some of the Ixal quests will be more Oaknots. Rather than revamping the pricing structure (which would punish people for not banking their Oaknots in anticipation of the patch), they will simply give more Oaknots going forward for the quests.