Rockstar GTA 6 launch marketing campaign begins in summer 2026: corroborated (confidence 65)

Tier_2 amplification corroboration via X Sentinel Session 6 (xsentinel_20260602_073812). Verdict held corroborated, confidence_score held 65. Aggregator relay of an event already anchored by the claim's existing rows; audit-trail breadth, not a verdict change. From corroborated to corroborated. Confidence 65. Evidence added: 1 new source.