Today Ubisoft® reveals the first details of “Operation Grim Sky” which will feature two new Operators, one American Attacker, and one Defender hailing from Great Britain. Operation Grim Sky will also mark the first ever Map Rework, one of the development team’s key commitments to enrich Siege players’ experiences during Year 3. HEREFORD BASE, an Today Ubisoft® reveals the first details of “Operation Grim Sky” which will feature two new Operators, one American Attacker, and one Defender hailing from Great Britain. Operation Grim Sky will also mark the first ever Map Rework, one of the development team’s key commitments to enrich Siege players’ experiences during Year 3. HEREFORD BASE, an