I think Apple has hit the ceiling, for now, on new features. The temperature sensor was kinda pushing in my opinion. Most new feature will have to be software related.
I wish Apple would pour some money into Siri! Improving Siri would be the one single thing that would enrich multiple Apple products. Siri could be so much more if Apple wanted it to be. Not expecting AI from Siri but right now Siri can not do the most simple things.