This looks really interesting. (And in case anyone from the Apollo team is reading - just want to say I'm a huge fan of the product in general. Keep up the great work!)
The one thing that seems like a bit of a tough sell with this announcement is it looks like a lot of these integrations are pretty deeply intertwined with different parts of the framework and might not be easy to set up if you're using just the Apollo client and not the server. Just browsing quickly I see that some of the components require some workarounds and proxies and such with other backends. The post talks about making it easy to incrementally add graphql to existing apps, but for any apps built in languages other than NodeJS I'd worry that it might not be a first-class experience to use the entire platform.
I'll definitely have to look through the docs more thoroughly though, there's a lot here.