Quarian Ark Mass Effect Andromeda is Quarian Ark DLC to Mass Effect Andromeda Series.
Mass Effect fans were left excited by a fresh tease that Andromeda's missing quarian race is still coming to the game and here it is. Quarians do not appear in Andromeda, but it is established during the game's opening hours that the race is expected in the future (via a delayed ark, the Keelah Si'yah, which will also host the elcor, hanar, drell, and volus).
The latest mission involves a Remnant observatory, which has collected transmission data from what sounds like the quarian ark: