The In the Name of the Tsar DLC coming later this Summer to Battlefield 1 will be shown off at EA Play on June 10. The Battlefield blog has some nice details on the content coming in this new DLC.
New Map: Prise de Tahure


Experience Nivelle Nights in June
Speaking of new maps, the previously announced Nivelle Nights is soon here. Releasing in June for Battlefield 1 Premium Pass owners, this night map is located at the muddy battlefields around Malmaison and Soupir. Bite and hold as your foe will fight for every inch of ground.


Premium FriendsEA PLAY 2017: First Details of Battlefield 1 In the Name of the Tsar

They also mention that the May update is "coming soon." They say that those who enjoy Operations will enjoy this update.

It should also be noted that if you're able to get there, you can attend EA Play for free. Be sure to get your EA Play tickets now before they're gone.