For those who think Google is so great... you have noticed that these are things that Google "aspires" to do and that they will release "later this year". These may be things that they do. In fact, the word "maybe" and "aspire" was thrown around A LOT.
While it appears that Google "intends" to have Google Assistant do some great things, I really don't see how it is much better than Siri initially, and I imagine that Apple will be upgrading Siri significantly in a few weeks. The only difference is that the update will be available with a firm timeframe and firm feature set.
Does Google not realize that things like Siri and AirPlay have already existed for years now and works great? How about HomeKit? While Apple has had some trouble getting that up and running from a hardware aspect... it is working and already integrated.
It seems to me that Google is pre-announcing what they are working on so when Apple announces finished products in a month, Google will look like it's still on top of things. Personally, I think it's a bunch a vaporware. I have no doubt they can deliver it... but I am willing to bet that it won't work great on launch and will take another two years to work... if Google doesn't shutter it yet.
Yes, I've noticed that about them for years. Google's not the only offender though. Many companies still, puzzlingly enough, follow the annoying Microsoft model of promising the moon, wowwing the crowds and then pushing it off for some future date that never really comes.
That's why I've always argued that the excitement you see at Apple's events is real and not hype ginned up by clever marketing. When Apple shows off something cool and jaw-dropping, they usually follow it up with "And it's available today" (or some very reasonable date in the very near future.) That's usually followed by a hands-on event where people can actually use or handle the cool thing that Apple just showed off. Apple creates hype by actually delivering something when showing it off.