During an interview with DigitalSpy for his most recent movie, BLACKHAT, Chris Hemsworth said that RAGNAORK will be a '"big" continuation of the Marvel Cinematic Universe."
He also went on to say that Craig Kyle and Christopher Yost have yet to turn in a script. This is to be expected. With the third THOR movie not set to hit theaters until July 2017, we shouldn't expect much news. The most we'll hear this year is the announcement of a director, and even that wouldn't be until the end of the year (most likely).
Still, it's exciting to hear something about the movie. I know the first two THOR movies weren't as great as the other MCU films, but I honestly enjoyed them, so I can't wait for RAGNAROK to hit the big screen!