Netflix has gotten the rights for some week-to-week new episode releases for foreign shows (The Uncanny Counter, etc.), including Anime like Uncle From Another World. For the "new episodes weekly" anime they've had it has all been sub only upon release to deal with the added delay and rights management of getting the dub versions. I'm not sure if this is going to be exactly the same but Netflix has been trying out the simultaneous release model for a bit now.