When it comes to news pouring out of Cupertino today,  many are understandably focused on multitasking. It was the thing Steve announced first, and it’s been the thing the ‘sphere has been salivating over for weeks. But the biggest news from Apple today wasn’t multitasking – and it wasn’t even the iAd platform. It was Game Center. Why is gaming such a big deal? Well, first there’s the obvious. Apple themselves have claimed that gaming is the biggest draw on the App Store. While Sony’s PSP and Nintendo’s DS have hundreds of available games, the App Store has 50,000+, and games regularly rank as the…