UPDATE: Thanks to Volgore, we have the Brazilian Overwatch Tweet about the schematic created by Torbjörn but, unlike the US version, this one cites "A. Amari" as one of the recipients. A. Amari, for those who have followed the lore behind Overwatch, is Pharah's mother also known as "Sombra. Check out the images below to see the differences between the US and Brazilian versions.
From Yesterday: The latest Overwatch Twitter post is a schematic for a weapon created by Torbjörn that seems to be some sort of sniper rifle with biotic healing capabilities, something which Mercy seems to have issue given the potential for weaponization. Many are speculating that the next character, "Sombra" (Shadow in Spanish), is actually Ana Amari, Egyptian sniper and the mother of Pharah.
According to Polygon, Reaper, said to be close to Sombra, often says, "Where's Sombra when you need her?" and there are hints about her on the Dorado map.