Thor 4 is in the works, according to The Hollywood Reporter who broke the news. We also learned that Taika Waitit who wrote & directed Thor: Ragnarok is returning also. This is fantastic news unless you are a fan of Japanese manga, because Taika was working on a live action version of Akira which is now on hold indefinitely.

You can read more about the news in the link below:

https://www.hollywoodreporter.com/heat-vision/taika-waititi-direct-thor-4-1224464