Yes, called Seattle, in their codenames.

For a little while there was one partner who used it for Gluster ( or similar ) storage nodes.

It fit into the model of Arm processors that were performant enough to be the glue between hard disks or flash and a reasonably fast network. But after the PCI lanes were all dispatched there wasn't a lot of compute for applications on top.

I think it's this rumor: https://www.hardwareheaven.com/amd-is-preparing-an-arm-soc-f...

I think they grafted 4 and 8 cortex a57 in to a package and it didn’t seem to have much market interest.

I too have heard that they have their own ARM micro architecture project though

I could see AMD grafting an Arm front end onto Epyc.