(Although Thor will obviously appear in the upcoming The Avengers: Infinity War.)
From what Taika Waititi told the Radio Times, another Thor movie could eventually be in the cards.
Marvel has its movie schedule already slotted out through 2019, when the still-untitled fourth Avengers movie is set to come out, and there’s not a Thor film on it.
However, so far Marvel’s slate doesn’t indicate Thor 4 will be happening–at least not anytime soon.