Pokemon Go, Niantic is releasing Bronze, Silver, and Gold boxes into the game; they include things like incense, lure modules, lucky eggs, Poke Balls, and Great Balls. These replace the previous freebies, including Special, Great, and Ultra boxes that were available December 25-30.
Additionally they added Lure Modules — tools used in-game to draw Pokemon to PokeStops — will last for double the time. Instead of the usual 30 minute limit, they will now last 60 minutes.
“This has been an exciting year for Pokemon GO As we look ahead to 2017, we have one more surprise for you! We will be adding a few limited-time holiday item packs to the Pokémon GO in-game shop at a discounted rate. The morning of December 25 through the afternoon of December 30 (PST), we’ll be releasing Special, Great, and Ultra Boxes. Items in these Boxes include Incubators, Incense, Great Balls, and Ultra Balls. From the afternoon of December 30 through the afternoon of January 3 (PST) we’ll release Bronze, Silver, and Gold Boxes. Items in these Boxes include Incense, Lure Modules, Lucky Eggs, Poké Balls, and Great Balls. – pokemongolive“