See @mattdm 's post above.
Here’s Adam’s Highly Non Politically Correct Take He Hopes Nobody Too High In His Management Chain Sees: RH wanted a big splashy announcement for Summit, and now it’s got one.
If you believe that RH is sufficiently nimble, organized and internally-communicative that it is entirely certain what it actually wants Fedora Hummingbird to be already, somebody in PR needs a massive raise, cos I bet we don’t. 
Now the Summit thing is done the types of people who care a lot about getting announcements done for Summit will relax, and the rest of us can get on with the business of figuring out what the thing is actually going to be…