I am a bit doubtful if the supposed difference of a AAW/GP variant still exist for the CSC, seeing how LM (as well as other contestants) only pitched for a single model of the canadized Type 26 in the entire duration of the selection campaign (at least that's what the public was shown). I don't see how they could have made a major variation to the now seemingly finalized design of the CSC/Type 26 to the extent that it would create two structurally different ships class. Even if the RCN still intends to keep the distinction between air defence and general purpose frigate I believe that it would merely be a difference on the designated mission loadout of interchangeable equipment and munitions, such as long range SAMs, towed sonar and etc.
My thought is that the AAW Variant will have a different weapons loadout in the VLS cells and potentially more cells in total, other than that I could maybe see the radar being scaled up a touch, past that I do not think there will be many other differences.