There is UMTS/GSM module what certainly is not designed to Amiga market.
That would mean some good heavy Linux support I have missed. Or some OS I am not aware of.
Customers using it are probably going to write their own drivers. These kind of embedded things run software you cant buy from online stores.
There is no option to buy board without OS and Acube website.
I am sure possible industrial customers can buy boards without OS4.