Are these drawn 2D games a lot more intensive to make than the 3d Ones?
Because if we look at the top 3d games like Eternum, Manor, Headmaster etc, we are getting content every few months.
Those comparings about release times are a little bit difficult to answer, e.g. teamsize, game engine and art style makes a big difference. On some games even a bugfix would be called an update, likewise a small update with only few images can't be compared to a full arc based update.
But back to the initial question: Generally speaking 2d art is more labor intensive than 3dcg e.g. a big scene change would need a full redraw in 2d when you can literally change the scene easy in 3d and send the result to the render PC.
Another thing would be the use of pre-made models and scenes in 3d, a lot of devs are using pre-made models/scenes and modify them slightly), the dev time for updates will increase drastically when they would need to create the model/scene from scratch.
You can notice such things if you look closely at the mentioned games, a lot of models/scenes look very similar.
There would be a lot more to write but you get the drift.
And in case of the very long dev-time for the WAL update please don't forget the IRL-problems the dev's had suffered from.
