It looks like a new Overwatch map was going to be revealed yesterday, before the announcement was pulled.
In an article that's now been taken offline, Dexerto reported that a new Deathmatch map called Malevento, based in Italy, was to be added to the Public Test Region.
According to the article, the map "features a mix of both tight corridors and more open outdoor areas, leading to a blend of close-quarters combat while still leaving the door open for the likes of Widowmaker to excel from afar".