Unless they are going to announce that they will stop letting motherboards lock your cpus, I don't see why I should be excited.
Its workstation class, aimed at $5000 computers on a completely open framework.
I'm not convinced that the AMD EPYC feature is malicious however. So I personally would still go with Threadripper or whatever.
On the Intel chips the ME security has been cracked completely so in theory someone could write an open source ME firmware replacement, although this might require a hardware mod to bypass the signature checks.