well, i bought the head texture back in 3.8 and i remember reading somewhere its only for 3.8 . so now that the version is 3.9 its still useable and saleable?
it meant its only 3.8 and higher, so if someone had an older version than 3.8 it wouldnt show up. so, yes, it is useable and sellable for 3.9 and future versions.