Hasbro and Wizards of the Coast have teased the upcoming expansion for Magic: The Gathering just ahead of New York Toy Fair. However, the official reveal for the expansion won't be hitting us until PAX East in late March. The card pack will also release in Magic: The Gathering Arena this spring to keep the digital version of MTG fresh.
In fact, War of the Spark will launch in Arena before the cards hit retailers this April. Release dates for the card set are:
Prerelease April 27, 2019
MTG Arena April 25, 2019
You can check out the teaser for War of the Spark below.