@noracodes Threads has said they will support migration of accounts to other fediverse services. People would still have to establish another fedi account to migrate to, as with intra-Mastodon migrations.
The exact implementation remains a total mystery, of course, and they could be lying, but I think Meta tends to lie about a slightly different set of things than technical capabilities.
@kissane ah! thank you for the correction, I totally missed that.