Foxconn is said to have successfully completed durability testing for two different Apple iPhone foldable prototypes. According to Taiwanese supply chain rag, Money UDN, the two prototypes are said to resemble the Samsung Galaxy Z Fold and Galaxy Z Flip respectively in design approach.
https://www.notebookcheck.net/Two-distinct-foldable-iPhone-prototypes-pass-Foxconn-durability-testing.512850.0.html
Get ready to start looking for bank loans just to get one of these. I doubt the carriers will continue leasing phones at the prices Apple is going to want for these.