Though I can't comment on anything outside of the keynote, I can say one thing for sure, this WWDC has a lot of meat on its bones.
Having not been here for 20 years I can't comment on the prior few but just getting the vibe from the other developers I think people are genuinely excited about what was announced and I think it will spur a lot of new and cool products.
The Borg Trashcan
With the current news on the the NSA and FBI collecting meta data from cell phone companies, and that seven of the biggest internet companies provide data directly to them as well, I wonder if they really are able to process that much data.
Given that the Boston bombers managed to be invisible despite a lot of suspicious activity you wonder if the ability to collect data is far in excess of the ability to make sense of it. Of course it could be possible that they did know, but don't want to advertise that fact. If they point out the freckle on your face from space, it might make "the enemy" know too much. If they point out the bombers before they strike, people might realize they need to be more careful.
Thinking about the data that is being collected, if you could actually handle the volume and fuzziness of the information, there is a lot of amazing (and frightening) stuff you could do with it. Just knowing the identity, time, and location of each side of a phone call can tell you virtually everything you would ever want to know about an entire net of individuals. Even without any voice at all, associations could be a powerful way to know what everyone is doing.
Reading about the layoffs at Zynga, people pointed out how great the laid off workers would be to hire, because they had a very rigorous hiring process.
I had to laugh. What a waste of time and energy to spend long hours interviewing people trying to find "rock stars" and then getting rid of them not long afterwards. The longer you take to interview your programming team members the less useful it becomes.
Yet I know a lot of companies seem to revel in full day or even multi-day interview processes, trying to eliminate even the tiniest chance that the person won't be Nobel material. A programmer I know was interviewed at Microsoft so many times, all of them long distance travel, he virtually lived there. I was interviewed with travel for a contract position of all things: 8 serial interviews with different people.
They published my post on how hotel reservations work.
Of all the things I do or use today, the only thing I have in common with my first job is that I still write code.
Everything else has changed and changed and changed again.
If you don't keep learning, keep reading, keep improving your skills eventually that nasty steamroller behind you will flatten you permanently. Then your career is likely over.