It's not currently on the ToDo list as the V5 has nothing in common with the previous ONE enclosures other than the name and the manufacturer. In addition, I don't have an OLED device to test the function, and I would need capable testers with the ONE V5 case to get useful feedback in a timely manner during the development/debugging phase.
As far as I can see in Argon40's implementation with their scripts, the OLED requires additional Python modules like Luma.OLED and some binaries provided by Argon40. The latter without licence information. This hinders an integration, not only the additional abundant effort.
What expectations would you have regarding OLED support? Only the few cyclically repeated system information as with the argon1v5.sh script?