The fallacy of appeal to novelty (or argumentum ad noivtatem) occurs when an arguer concludes that an opinion or idea is good or correct because of its being new or modern. This overlooks that not all new things are good, so that newness by itself is no guarantee or correctness or merit.

Here is an example:

"Obviously out of all the different Road Rambler video games, the best one must be Road Rambler 8, because it is the latest one."

Despite the trend of video game makers to put more advanced features into subsequent game releases, it is entirely possible that a previous installment of the game is better overall. It cannot be assumed that the latest one is the best just because it is the newest.

Image Credit: Vector Portal under CC BY 4.0