The Pokémon GO Steeled Resolve Taken Over event will run from April 30 to May 4, turning up the pressure with increased appearances from Team GO Rocket across the map. Players can hatch Shiny Varoom from 12 km eggs for the first time, adding a rare new target for collectors. The event also brings Shadow Incarnate Forme Landorus into the mix, giving battlers a powerful addition to chase. With more Rocket encounters, special bonuses and event-themed challenges, it offers a more intense twist on the broader Steeled Resolve celebration.
Source: Official Pokémon GO blog and Pokemon.com