Tickets

Tickets are an upcoming item in that grants a Trainer entry to a special in-game event.

A Colossal Discovery
A mysterious new item called Ticket: A Colossal Discovery. The method of obtaining this item is currently unknown, but some tickets may need to be purchased from the Shop using real-life currency. The event is currently set to take place on November 2, 2019.

The name of the pass heavily hints at the possible discovery of the Legendary Pokémon Regigigas who is known as the Colossal Pokémon.

In-game description
A ticket to access the "A Colossal Discovery" special event on November 2 from 11:00 AM to 7:00 PM local time, wherever you are.

Trivia

 * Tickets were first discovered in APK version 0.157.0.
 * The design of the ticket is similar to a Raid Pass.