James Cameron came to CinemaCon 2016 to announce that he will be continuing with his Avatar franchise but also laying out the release dates for all of these sequel films to have. 

Each film will stand alone but also tell a complete story in this epic saga, Cameron said.

Here are all the release dates:

Avatar 2 - Christmas 2018
Avatar 3 - Christmas 2020
Avatar 4 - Christmas 2022
Avatar 5 - Christmas 2023
  
Cameron has been working with his team of writers to come up with scripts and designs for up to several Avatar movies. It is very clear that Cameron wants this to become his new star wars saga.  

I guess we will have to wait and see if all his work pays off when the first sequel arrives. But the key difference now is, that he has to compete with the Star Wars films that also release the same time every year from now on.