I don't see myself upgrading, based on what the specs they are claiming the new AirPods will have. I think the only way I'd upgrade is if the new AirPods have drastically better sound quality. The only other thing that would make me consider buying them is if they offer more "buttons" or similar controls, where you can pause, fast forward, rewind, etc. via a button on the Airpods or a gesture. It doesn't sound, at least at this point, that it will have either of those.
In fact, I'll go so far as to say that an "always on" Siri (which some are claiming is a new feature) isn't appealing to me, particularly since it seems like it would cause a hit in battery life.