Since you will be purchasing this template form themeforest, you are eligible for life long updates from our side.
We have some list of features to be integrated in future. Stay tuned.
Once you receive a new update from our side. All you need to do is update the /content folder and keep rest structure as is.
But if you have made any changes in html structure of any files then you will have to compare the old file structure with the new one.