As I've posted elsewhere, with THE remaining major 23rd century character 'leaving the building' soon, a major focus on Spock, his relationship with Saavik, his surviving human and Vulcan family family and his ambassadorship should permeate the 24th century novels until the Hobus event...
Why should it?
Well, there's no reason that they must, but I'd argue that they should. The split to the JJverse is a pretty huge event in itself. Being the exit of the iconic breakout character from TOS is bigger.
Simply as a matter of respecting the character, the event should be more than an afterthought. As a marketing opportunity for S & S it's too good to miss.
A loose series like we have seen recently would suffice - sub plots or lip service foreshadowing later events in a book or two, a Spock centric story or two leading into the Hobus event and a full biography would be my choice.
That's probably asking a bit much, but a 'Spock - The Beginning of The End' type marketing push makes sense AND serves the character.