Mid-December 2014, the CASTEP developers released a UK academic version of NMR CASTEP 8.0 which allows the calculation of spin-spin (J) coupling in the NMR computation. I am currently operating MSv8.0, and I have not seen the addition of J-coupling introduced in the NMR CASTEP module for MSv8.0. I am wondering if you have any information on when the calculation of J-coupling will be introduced into MSv8.0? 

Best regards..