Dialga and the Lucky Trinket are returning to January’s GO Pass and GO Pass Deluxe in Pokémon GO starting Jan. 6, giving players another reason to log in and stay active. By completing Pass Tasks, Trainers can rank up their GO Pass to unlock rewards, including an encounter with Dialga and other bonuses along the way. The system rewards consistent play rather than one-off sessions, making it easier to progress over time. For players weighing the standard and Deluxe options, January’s lineup offers solid incentives, especially for anyone still chasing Dialga or looking to stack extra items.
Source: Official Pokémon GO blog