For the moment, at least, I count the "Prime" and "Pocket Books" timelines as separate. There appears to be a divergence point after Nemesis: One timeline leads to "Destiny," and the other leads to "Countdown" (and from there to STO).
IOW, "Spock Prime" explicitly comes from the STO timeline --a timeline in which
IOW, "Spock Prime" explicitly comes from the STO timeline --a timeline in which
Data has resurrected, Picard has become ambassador to Vulcan, and Borg technology continues to exist.