The date for The Division's Underground DLC appears to have been leaked by Amazon.
— Arekkz (@Arekkz) June 5, 2016
The Division Underground expansion release date leaked on Amazon
We already knew that the first expansion for The Division would be released in June, but it looks like listings on Amazon UK and Amazon Germany have spilled the beans on the release date for the DLC on Xbox One.
You'll be able to pre-download the content on June 25, and play it when it officially releases on June 28.
Underground is the first of three expansions, and takes players to "the uncharted underworld of New York City. [You] will chase deadly enemies with up to three other Agents through an endless maze of tunnels and subways."
Because of the 30 day exclusivity deal with Microsoft, the first two expansions - Underground, and Survival - will be Xbox One exclusives for 30 days before heading to PC and PS4.