Is there going to be a Samsung Fold 8?

Probably yes — Samsung is expected to keep its Galaxy Z Fold lineup going, so a Galaxy Z Fold 8 would be a reasonable next model to expect.

I can’t confirm it as officially announced unless Samsung has already posted about it. The exact existence, name, and launch timing can change, so the safest approach is to check Samsung’s official Newsroom or Galaxy Unpacked announcements.

In short: it’s likely, but not official until Samsung confirms it.