13 June, 2018:Pratt & Whitney announced a Growth Option 2.0 upgrade for the F135 engine, which powers the fifth generation F-35 Lighting II aircraft that can provide better power and thermal management system (PTMS) capacity. The Growth Option 2.0 upgrade can be configured based on customer requirements to provide a range of PTMS improvements, an area which is emerging as a critical enabling capability for future block upgrades to the F-35 aircraft. The near-term iteration of this upgrade can provide a significant improvement in PTMS capacity.