Read the update next week they talk about the new items. This week served as away to talk about the update content. Petra war been out since Taken King, some players are just too lazy to finish it. Valks quest may give the shader or the PSN exclusive quest. Maybe it drops after we kill malok a few times or a Poe 260 chest drop. Who knows we won't find out till next week when the items are talked about or wait till April 12th