This series is not yet titled and is filming under the code title "Cobalt". The pilot is reported to be titled "Fear the Walking Dead"; however, that is NOT the title of the as of yet untitled spin-off.
Will this feature any returning characters from the primary show?
A
No. All that is known is that this show will take place in the same apocalyptic world, but with a different setting and characters. Details beyond that are unknown at this point.