as an airpods user the first thing that disappointed me was how we don't have as many controls on the airpods as we did on the wired earphones that they replaced. You can change the double tap functionality to be any one of: siri, next track, previous track, play/pause... but honestly it would be better if you could do all of those things. I was hoping they would address that with this update.
The "old" airpods will work with the new wireless charging case, so that's not really much of an upgrade on the headphones themselves.
Looks like the only real upgrade is longer battery life. Always welcome, but still not drastically different. I was googling for airpods 2 release all this week, but now that I see it, I'm not sure if I want to go through the hassle of buying the new ones and liquidating my old ones. I probably will though. Maybe the slightly longer battery life will be worth it, and if I can disable "hey siri" I might be able to eek out just a bit longer battery life.