Some of the biggest news in the Apple-focused blogosphere this week centers around Apple’s upcoming June 8 Worldwide Developers Conference. There’s the news, certainly, of what Apple said it’ll deliver, and then there are the predictions of what might or might not show up — a new iPhone, perhaps? Plus, Apple updated Mac OS X to 10.5.7 and plugged a few holes in Safari. Then there’s Sling Media, which delivered a new SlingPlayer Mobile app for the iPhone, and that picked up a surprising amount of steam.