According to Yamaki-san, the goal is to launch all of their current APS-C lenses in RF mount by the end of this year. Moreover, he added that they currently don’t have a plan to release full-frame RF mount autofocus lenses, but “they will do their best” to meet customers’ needs. https://www.cined.com/sigma-28-45mm-f-1-8-dg-dn-art-24-70mm-f-2-8-dg-dn-ii-art-first-look/