Davis tells Teen Wolf Wiki that he had no firm plot in mind for Season 7 because they never planned to make it.
When pressed, Davis says Season 7 might have followed Alec and picked up where Season 6 ended.
For years Davis and Teen Wolf star Tyler Posey discussed the possibility of doing a Teen Wolf movie based on the show. This never went beyond the "wouldn't it be cool" stage of development. There are no plans for a Teen Wolf movie.
There remains hope for a reboot of the show. Both MTV and Davis have expressed interest and talks have continued since the original show ended. Again, there are no plans at this time to make a new version of Teen Wolf, but the possibility remains with all parties involved interested in the idea.