It also seems very arbitrarily limited to the newer ones, 7/7pro seem like they should be more than capable of driving these features.
Is software limiting going to be the norm going forward for phones?
Because, I don't think this is worth upgrading from last years phones from a hardware basis.
Perhaps, we've reached a point in smartphones where the development cycles will be more iterative, instead of truly groundbreaking.
So I doubt there are really any limitations on the hardware themselves or that you absolutely need the new version. Google just paywalling the features.
I bet you all those will be available very soon for Google One subscribers.