Tie ins must adhere to on screen continuity, but there's some 'wrinkles' with Trek. As I see it :
They can't directly portray the 'Prime Universe' part of ST 2009.
They can't portray events in the JJverse either.
If the new show is set in the JJverse, the novels will remain, as they are currently, unaffected.
If the new show is set in a new continuity, the novels should be similarly unaffected.
If the new show is set in the 'Prime Universe‘ between Enterprise and TOS, the novels will need to adhere to this. However, as the periods before and after the show are already detailed on screen, there might not be too many surprises or big changes. Christopher may get the opportinity (!) for a clever retcon or two in his current Rise of the Federation series.
If the new show is set in the 'Prime Universe' but in another era or eras, it could be awkward.
Does that sound about right ?
They can't directly portray the 'Prime Universe' part of ST 2009.
They can't portray events in the JJverse either.
If the new show is set in the JJverse, the novels will remain, as they are currently, unaffected.
If the new show is set in a new continuity, the novels should be similarly unaffected.
If the new show is set in the 'Prime Universe‘ between Enterprise and TOS, the novels will need to adhere to this. However, as the periods before and after the show are already detailed on screen, there might not be too many surprises or big changes. Christopher may get the opportinity (!) for a clever retcon or two in his current Rise of the Federation series.
If the new show is set in the 'Prime Universe' but in another era or eras, it could be awkward.
Does that sound about right ?