I thought this would've taken longer, but here's the first beta for Opticraft 1.5.0 bringing support for 1.21.5. This release WILL go through a couple beta builds before public release. 1.5.0 will come to 1.21.1 and 1.21.4 a couple days or weeks after the initial release. This new update doesn't bring anything new previous to 1.4.0, this could change.