No Event Pass live right now.

UPDATE 1: According to leaks on June 13th, the new Event Pass will probably go live around July 19th.
Its theme will be Pirates of the Caribbean, and the first map changes have already been made!

UPDATE 2: Additional map changes have been made in the lake near the Wasteland biome.
Furthermore, Epic Games has published the first teaser for the new Event Pass on June 27th!