You know why we haven't heard as many rumors? Because Mark Gurman's sources dried up when he left 9to5 for Bloomberg. I did a brief stint at 9to5Mac as an author several years ago and talked to him several times and he was really freaking protective about his sources.
One time I opened up his draft in WordPress about the iPhone getting a 128GB size or something and he flipped his crap and disabled my login. I was just reading it because the headline in the post listing grabbed my attention. I couldn't compete with his sources, the international writers would get the overnight scoops, and I was relegated to smaller scraps of industry news that didn't make enough ad revenue to be worth it, so I didn't bother sticking around after he disabled my account. He used to knock it out of the park on a regular basis and since going to Bloomberg he hasn't really broken anything. I think he knew his good sources were going away and went for the high paying job. He can now make up crap and nobody calls him out on it because he is the young expert and everyone else is old and doesn't understand. I enjoyed my brief stint writing there, especially since I don't have much of a background in writing except on forums and Twitter. The site owner Seth is a really nice guy, but Mark was a jerk.
Alternatively, it could be that his sources went away because Apple found some way to clamp down on leaks, or did some kind of sting operation to find out and fire the loose lips around 1 Infinite Loop. Either way, it's exciting to see a WWDC with so much mystery around it. I'm kind of tempted to not read anything on MacRumors until the keynote just in case something leaks at the last moment. It's one thing to read something months in advance, and quite another to read it a couple days before and spoil the surprise right before the announcements.