I do not believe there have been any announcements about David Grissom changing his pickups. The spec page does not mention any update to them either, so I expect they may never be "TCI"d unless David starts looking for a refinement to how they sound.
The PRS page for the DGT says "For 2020, PRS has updated this model with TCI-tuned pickups and nitro over celluose (CAB) finish." I don't know how to verify a particular guitar has the TCI pickups unless the hang tag says so.
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