I found this document https://www.ghielectronics.com/docs/199/rs485 with a broken link to the catalog.
Is there a RS485 module?
No, but I think there has been. I have requested previously, and was guided to a rs232 adapter to use with the rs232 module.
Take a look here: https://www.ghielectronics.com/community/forum/topic?id=11563
It would be nice though to have that module!
Not broken but hidden 
I liked Steve Jobs mysterious and very short replies to his community. You are catching up Gus, LOL
Does that mean we are going to have RS485 module soon?
I hope this wil be revealed soon:)