Core Set 2021 and Jumpstart will be released next month; Although these Magic: The Gathering products may experience delays in their shipment due to production issues caused by the global pandemic, there's a sweet bonus for those who will purchase the Buy-a-Box promo for Core Set 2021.
Today, Wizards of the Coast has released a statement regarding the delays of Magic: The Gathering products, including the Secret Lair: Ultimate Edition, Core Set 2021, and Jumpstart. The publisher also announced that each Buy-a-Box promo for Core Set 2021 comes with two Jumpstart booster packs to give fans a sample of this unique set.

Key descriptions for Jumpstart:
Are you planning to buy a Buy-a-Box promo of Core Set 2021?
Core Set 2021 is set to release on July 3 with Prerelease events scheduled from June 26 to July 2. Jumpstart is set to launch on July 17.
Related: MTGDouble Masters VIP Edition Now Up on Amazon & It's More Expensive Than Expected