Fragments will no longer intermingle caster and martial attributes. For instance, if you get an Attack Power (Aggressive) fragment, it will only ever roll martial stats or shared stats. There is zero chance for Spell Power, Spell Crit Hit, Wisdom, or Intelligence. Fragments that have shared stats such as Crit Power (Punishing) have two versions that are denoted in the name as Martial or Mystical. Example: Punishing Mystical Death Fragment.
Additionally, with this change, the secondary attributes will no longer be static. They now have a range at which they can roll upon creation, being revealed, or being selected at a infusion tier level up.
It is important to note that martial characters can still get caster fragments. This is intended because fragments are account bound and as such can be traded freely to alts.